Filed pursuant to Rule 424(b)(3)
Registration Statement No. 333-228389

PROSPECTUS

Apergy Corporation

Offer to Exchange

$300,000,000 aggregate principal amount of its 6.375% Senior Notes due 2026 (the “exchange notes”), which have been registered under the Securities Act of 1933, as amended (the “Securities Act”), for any and all of its outstanding 6.375% Senior Notes due 2026 (the “outstanding notes” and such transaction, the “exchange offer”)

We are conducting the exchange offer in order to provide you with an opportunity to exchange your unregistered outstanding notes for the exchange notes that have been registered under the Securities Act.

The Exchange Offer

Results of the Exchange Offer

There is no established trading market for the exchange notes or the outstanding notes and we do not intend to list the exchange notes or the outstanding notes on any securities exchange.

All untendered outstanding notes will remain outstanding and continue to be subject to the restrictions on transfer set forth in the outstanding notes and in the Indenture (as defined herein). In general, the outstanding notes may not be offered or sold, unless registered under the Securities Act, except pursuant to an exemption from, or in a transaction not subject to, the Securities Act and applicable state securities laws. Other than in connection with the exchange offer, we do not currently anticipate that we will register the outstanding notes under the Securities Act.

Each broker-dealer that receives exchange notes for its own account in the exchange offer must acknowledge that it will deliver a prospectus in connection with any resale of those exchange notes. The letter of transmittal states that by so acknowledging and delivering a prospectus, a broker-dealer will not be deemed to admit that it is an “underwriter” within the meaning of the Securities Act. This prospectus, as it may be amended or supplemented from time to time, may be used by a broker-dealer in connection with resales of exchange notes received in exchange for outstanding notes where the broker-dealer acquired such outstanding notes as a result of market-making or other trading activities. We have agreed to keep effective the registration statement of which this prospectus is a part until 180 days after the completion of the exchange offer. See “Plan of Distribution.”

See “Risk Factors” beginning on page 12 for a discussion of certain risks that you should consider before participating in the exchange offer.

Neither the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

The date of this prospectus is November 21 , 2018.

TABLE OF CONTENTS

Unless otherwise indicated or context otherwise requires, all references in this prospectus to “Apergy Corporation,” “Apergy,” “the Company,” “we,” “us,” “our” and “our company” refer (i) prior to the Separation (as defined herein), to the Apergy businesses, consisting of entities, assets and liabilities, conducting the upstream oil and gas business within Dover’s Energy segment and (ii) after the Separation, to Apergy Corporation and its consolidated subsidiaries.

References in this prospectus to “Dover” refer to Dover Corporation, a Delaware corporation and its consolidated subsidiaries (other than Apergy Corporation and its combined subsidiaries), unless the context otherwise requires or as otherwise specified herein.

This prospectus incorporates or references important business and financial information about Apergy that is not included in or delivered with this prospectus. This information is available without charge to any person to whom this prospectus is delivered, upon written or oral request. Written requests should be sent to:

Apergy Corporation

2445 Technology Forest Blvd

Building 4, 12th Floor

The Woodlands, Texas 77381

Attn: David Skipper

Oral requests should be made by telephoning (713) 230-8031.

To ensure timely delivery, you should make your request to us no later than December 12, 2018, which is five business days prior to the expiration date of the exchange offer.

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CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS

This prospectus contains “forward-looking statements” within the meaning of the safe harbors from liability established by the Private Securities Litigation Reform Act of 1995. Forward-looking statements are usually related to future events and anticipated revenues, earnings, cash flows or other aspects of our operations or operating results. Forward-looking statements are often identified by the words “believe,” “anticipate,” “expect,” “may,” “intend,” “foresee,” “guidance,” “estimate,” “potential,” “outlook,” “plan,” “should,” “will,” “would,” “could,” “target,” “forecast” and similar expressions, including the negative thereof. The absence of these words, however, does not mean that the statements are not forward-looking statements. Forward-looking statements are based on our current expectations, beliefs and assumptions concerning future developments and business conditions and their potential effect on us. While management believes that these forward-looking statements are reasonable as and when made, there can be no assurance that future developments affecting us will be those that we anticipate.

All of our forward-looking statements involve risk, uncertainties (some of which are significant or beyond our control) and assumptions that could cause actual results to materially differ from our historical experience and our present expectations or projections. Known material factors that could cause actual results to materially differ from those contemplated in the forward-looking statements include those set forth in this prospectus under the heading entitled “Risk Factors,” which are summarized as follows:

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We undertake no obligation to publicly update or revise any of our forward-looking statements after the date they are made, whether as a result of new information, future events or otherwise, except to the extent required by law.

WHERE YOU CAN FIND MORE INFORMATION

We are required to file annual, quarterly and current reports, proxy statements and other information with the SEC. Our SEC filings are available to the public on the SEC’s website at http://www.sec.gov.

We have filed with the SEC a registration statement on Form S-4 relating to the securities covered by this prospectus. This prospectus is a part of the registration statement and does not contain all of the information in the registration statement. Whenever a reference is made in this prospectus to a contract or other document of ours, please be aware that the reference is only a summary and that you should refer to the exhibits that are a part of the registration statement for a copy of the contract or other document. You may access a copy of the registration statement through the SEC’s website.

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RISK FACTORS

You should carefully consider the risk factors set forth below as well as the other information contained in this prospectus. Any of the following risks could materially and adversely affect our business, financial condition, operating results or cash flow; however, these risks are not our only risks. In such a case, the trading price of the notes could decline or we may not be able to make payments of interest and principal on the notes, and you may lose all or part of your original investment.

Risks Related to Apergy’s Business

Trends in oil and natural gas prices may affect the drilling and production activity, profitability and financial stability of Apergy’s customers and therefore the demand for, and profitability of, Apergy’s products and services, which could have a material adverse effect on Apergy’s business, results of operations and financial condition.

The oil and gas industry is cyclical in nature and experiences periodic downturns of varying length and severity. Most recently, the oil and gas industry experienced a significant downturn in 2015 and 2016. Apergy’s ability to manage periodic industry downturns is important to its business, results and prospects. Demand for Apergy’s energy products and services is sensitive to the level of drilling and production activity of, and the corresponding capital spending by, oil and natural gas companies. The level of drilling and production activity is directly affected by trends in oil and natural gas prices, which are influenced by numerous factors affecting the supply and demand for oil and gas, including:

Oil and gas prices and the level of drilling and production activity have been characterized by significant volatility in recent years. In particular, the prices of oil and natural gas were highly volatile in 2014 and 2015 and declined dramatically. Prices of oil began to recover in late 2016, but there can be no assurance that increases

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will continue. Apergy expects continued volatility in both crude oil and natural gas prices, as well as in the level of drilling and production related activities. Even the perception of longer-term lower oil and natural gas prices can reduce or defer major capital expenditures by Apergy’s customers in the oil and gas industry. A significant downturn in the industry could result in the reduction in demand for Apergy’s products and services, and could have a material adverse effect on Apergy’s business, results of operations, financial condition and cash flows.

Apergy might be unable to compete successfully with other companies in its industry.

The markets in which Apergy operates are highly competitive. The principal competitive factors in Apergy’s markets are customer service, product quality and performance, price, breadth of product offering, market expertise and innovation. In some of Apergy’s product and service offerings, it competes with the oil and natural gas industry’s largest oilfield service providers. These large national and multi-national companies may have longer operating histories, greater financial, technical, and other resources, greater brand recognition, and a stronger presence in geographic markets than Apergy. In addition, Apergy competes with many smaller companies capable of competing effectively on a regional or local basis. Apergy’s competitors may be able to respond more quickly to new or emerging technologies and services, and changes in customer requirements. Many contracts are awarded on a bid basis, which further increases competition based on price. As a result of competition, Apergy may lose market share or be unable to maintain or increase prices for its present services, or to acquire additional business opportunities, which could have a material adverse effect on Apergy’s business, results of operations, financial condition and cash flows.

If Apergy is unable to develop new products and technologies, its competitive position may be impaired, which could materially and adversely affect its sales and market share.

The markets in which Apergy operates are characterized by changing technologies and introductions of new products and services. As a result, Apergy’s success is dependent upon its ability to develop or acquire new services and products on a cost-effective basis, to introduce them into the marketplace in a timely manner and to protect and maintain critical intellectual property assets related to these developments. Difficulties or delays in research, development or production of new products and technologies, or failure to gain market acceptance of new products and technologies, may significantly reduce future revenues and materially and adversely affect Apergy’s competitive position. While Apergy intends to continue committing substantial financial resources and effort to the development of new services and products, Apergy may not be able to successfully differentiate its services and products from those of its competitors. Apergy’s customers may not consider its proposed services and products to be of value to them or may not view them as superior to Apergy’s competitors’ services and products. In addition, competitors or customers may develop new technologies, which address similar or improved solutions to Apergy’s existing technology. Further, Apergy may not be able to adapt to evolving markets and technologies, develop new products, achieve and maintain technological advantages or protect technological advantages through intellectual property rights. If Apergy does not compete successfully, its business, results of operations, financial condition and cash flows could be materially adversely affected.

Apergy could lose customers or generate lower revenue, operating profits and cash flows if there are significant increases in the cost of raw materials or if Apergy is unable to obtain raw materials.

Apergy purchases raw materials, sub-assemblies and components for use in its manufacturing operations, which exposes Apergy to volatility in prices for certain commodities. Significant price increases for these commodities could adversely affect Apergy’s operating profits. While Apergy generally attempts to mitigate the impact of increased raw material prices by endeavoring to make strategic purchasing decisions, broaden its supplier base and pass along increased costs to customers, there may be a time delay between the increased raw material prices and the ability to increase the prices of products, or Apergy may be unable to increase the prices of products due to a competitor’s pricing pressure or other factors. In addition, while raw materials are generally available now, the inability to obtain necessary raw materials could affect Apergy’s ability to meet customer commitments and satisfy market demand for certain products. Certain of Apergy’s product lines depend on a

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limited number of third-party suppliers and vendors. The ability of these third parties to deliver raw materials may be affected by events beyond Apergy’s control. Consequently, a significant price increase in raw materials, or their unavailability, may result in a loss of customers and adversely impact Apergy’s business, results of operations, financial condition and cash flows.

Federal, state and local legislative and regulatory initiatives relating to hydraulic fracturing and the potential for related litigation could result in increased costs and additional operating restrictions or delays for Apergy’s customers, which could reduce demand for Apergy’s products and negatively impact Apergy’s business, financial condition and results of operations.

Environmental laws and regulations could limit Apergy’s customers’ exploration and production activities. Although Apergy does not directly engage in hydraulic fracturing activities, it provides products and services to hydraulic fracturing operators in the oil and natural gas industry. Hydraulic fracturing is a widely used industry production technique that is used to recover oil and/or natural gas from dense subsurface rock formations. The process involves the injection of water, proppants and chemicals, under pressure, into the formation to fracture the surrounding rock and stimulate production. The hydraulic fracturing process is typically regulated by state or local governmental authorities. However, the practice of hydraulic fracturing has become controversial in some areas and is undergoing increased scrutiny. Several federal agencies, regulatory authorities, and legislative entities are investigating the potential environmental impacts of hydraulic fracturing and whether additional regulation may be necessary. The U.S. Congress has from time to time considered, but has not yet adopted, legislation to provide for federal regulation of hydraulic fracturing and to require disclosure of the chemicals used in the process. The U.S. Environmental Protection Agency (“EPA”) has issued a number of regulations in recent years that may affect hydraulic fracturing; however, the current administration has more generally indicated an interest in scaling back or rescinding regulations that inhibit the development of the U.S. oil and gas industry. It is difficult to predict the extent to which proposed regulations will be implemented or the outcome of any related litigation.

In addition, various state and local governments have implemented, or are considering, increased regulatory oversight of hydraulic fracturing through additional permitting requirements, operational restrictions, disclosure requirements and temporary or permanent bans on hydraulic fracturing in certain areas such as environmentally sensitive watersheds. For example, many states have imposed disclosure requirements on hydraulic fracturing well owners and operators regarding the chemicals used in hydraulic fracturing. Some local governments have adopted and others may seek to adopt ordinances prohibiting or regulating the time, place and manner of drilling activities in general or hydraulic fracturing activities within their jurisdictions. Concerns have been raised that hydraulic fracturing may also contribute to seismic activity and in response to these concerns, regulators in some states, including Texas, are seeking to impose additional requirements. Increased regulation and attention given to induced seismicity could lead to greater opposition to, and litigation concerning, oil and natural gas activities utilizing hydraulic fracturing or injection wells for waste disposal.

The adoption of new laws or regulations at the federal, state, or local levels imposing reporting obligations on, or otherwise limiting or delaying, the hydraulic fracturing process could make it more difficult to complete oil and gas wells, increase Apergy’s customers’ costs of compliance and doing business, and otherwise adversely affect the hydraulic fracturing services they perform, which could negatively impact demand for Apergy’s products and services. In addition, heightened political, regulatory and public scrutiny of hydraulic fracturing practices, including lawsuits, could expose Apergy or its customers to increased legal and regulatory proceedings, which could be time-consuming, costly or result in substantial legal liability or significant reputational harm. Apergy could be directly affected by adverse litigation, or indirectly affected if the cost of compliance or the risks of liability limit the ability or willingness of Apergy’s customers to operate. Such costs and scrutiny could directly or indirectly, through reduced demand for Apergy’s products and services, have a material adverse effect on its business, results of operations, financial condition and cash flows.

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Apergy’s growth and results of operations may be adversely affected if it is unsuccessful in its capital allocation and acquisition program.

If Apergy fails to allocate its capital appropriately, in respect of either its acquisition program or organic growth in its operations, it could be overexposed in certain markets and geographies and unable to expand into adjacent products or markets. Apergy expects to pursue a strategy of acquiring value creating, add-on businesses that broaden its existing position and global reach thereby complementing its existing businesses. However, there can be no assurance that Apergy will be able to continue to find suitable businesses to purchase, that Apergy will be able to acquire such businesses on acceptable terms, or that all closing conditions will be satisfied with respect to any pending acquisition. If Apergy is unsuccessful in its acquisition efforts, then its ability to continue to grow could be adversely affected. In addition, Apergy faces the risk that a completed acquisition may underperform relative to expectations. Apergy may not achieve the synergies originally anticipated, may become exposed to unexpected liabilities or may not be able to sufficiently integrate completed acquisitions into its current business and growth model. These factors could potentially have an adverse impact on Apergy’s business, results of operations, financial condition and cash flows.

Apergy’s products are used in operations that are subject to potential hazards inherent in the oil and natural gas industry and, as a result, Apergy is exposed to potential liabilities that may affect its financial condition and reputation.

Apergy’s products are used in potentially hazardous drilling, completion and production applications in the oil and natural gas industry where an accident or a failure of a product can potentially have catastrophic consequences. Risks inherent to these applications, such as equipment malfunctions and failures, equipment misuse and defects, explosions, blowouts and uncontrollable flows of oil, natural gas or well fluids and natural disasters can cause personal injury, loss of life, suspension of operations, damage to formations, damage to facilities, business interruption and damage to or destruction of property, surface water and drinking water resources, equipment and the environment. In addition, Apergy provides certain services that could cause, contribute to or be implicated in these events. If Apergy’s products or services fail to meet specifications or are involved in accidents or failures, Apergy could face warranty, contract or other litigation claims, which could expose Apergy to substantial liability for personal injury, wrongful death, property damage, loss of oil and natural gas production, and pollution and other environmental damages. Apergy may agree to indemnify its customers against specific risks and liabilities. While Apergy currently maintains insurance protection against some of these risks, and seeks to obtain indemnity agreements from its customers requiring them to hold Apergy harmless from some of these risks, Apergy’s current insurance and contractual indemnity protection may not be sufficient or effective enough to protect it under all circumstances or against all risks. The defense of these lawsuits may require significant expenses and divert management’s attention, and Apergy may be required to pay damages that could adversely affect its business, results of operations, financial condition and cash flows. In addition, the frequency and severity of such incidents could affect insurability and relationships with customers, employees and regulators. In particular, Apergy’s customers may elect not to purchase its products or services if they view its safety record as unacceptable, which could cause Apergy to lose customers and substantial revenues.

Apergy’s customers’ industries are undergoing continuing consolidation that may impact Apergy’s results of operations.

The oil and gas industry is rapidly consolidating and, as a result, some of Apergy’s largest customers have consolidated and are using their size and purchasing power to seek economies of scale and pricing concessions. This consolidation may result in reduced capital spending by some of Apergy’s customers or the acquisition of one or more of Apergy’s primary customers, which may lead to decreased demand for Apergy’s products and services. Apergy cannot assure you that it will be able to maintain its level of sales to a customer that has consolidated or replace that revenue with increased business activity with other customers. As a result, the acquisition of one or more of Apergy’s primary customers may have a significant negative impact on Apergy’s

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business, results of operations, financial condition or cash flows. Apergy is unable to predict what effect consolidations in the industry may have on price, capital spending by its customers, its selling strategies, its competitive position, its ability to retain customers or its ability to negotiate favorable agreements with its customers.

Apergy is subject to information technology, cybersecurity and privacy risks.

Apergy depends on various information technologies throughout its company to store and process information and support its business activities. Apergy also manufactures and sells hardware and software to provide monitoring, controls and optimization of customer critical assets in oil and gas production and distribution. Apergy also provides services to maintain these systems and to enable higher return through their business and technical domain knowledge. Additionally, Apergy’s operations rely upon partners, vendors and other third-party providers of information technology software and services. If these technologies, systems, products or services are damaged, cease to function properly, are breached due to employee error, malfeasance, system errors, or other vulnerabilities, or are subject to cybersecurity attacks, such as those involving unauthorized access, malicious software and/or other intrusions, including by criminals, nation states or insiders, Apergy or its partners, vendors or other third parties could experience production downtimes, operational delays, other detrimental impacts on its operations or ability to provide products and services to its customers, the compromising of confidential, proprietary or otherwise protected information, including personal and customer data, destruction, corruption, or theft of data, security breaches, other manipulation, disruption, misappropriation or improper use of its systems or networks, financial losses from remedial actions, loss of business or potential liability, adverse media coverage, legal claims or legal proceedings, including regulatory investigations and actions, and/or damage to its reputation. While Apergy attempts to mitigate these risks by employing a number of measures, including employee training, technical security controls and maintenance of backup and protective systems, Apergy’s and its partners’, vendors’ and other third-parties’ systems, networks, products and services remain potentially vulnerable to known or unknown cybersecurity attacks and other threats, any of which could have a material adverse effect on Apergy’s business, results of operations, financial condition and cash flows.

Apergy and its customers are subject to extensive environmental and health and safety laws and regulations that may increase Apergy’s costs, limit the demand for Apergy’s products and services or restrict Apergy’s operations. In addition, future regulations, or more stringent enforcement of existing regulations, could increase those costs and liabilities, which could adversely affect Apergy’s results of operations.

Apergy’s operations and the operations of its customers are subject to numerous and complex federal, state, local and foreign laws and regulations relating to the protection of human health, safety and the environment. These laws and regulations affect Apergy’s customers by limiting or curtailing their exploration, drilling and production activities, the products and services Apergy designs, markets and sells and the facilities where Apergy manufactures its products. For example, Apergy’s operations and the operations of its customers are subject to numerous and complex laws and regulations that, among other things: may regulate the management and disposal of hazardous and non-hazardous wastes; may require acquisition of environmental permits related to its operations; may restrict the types, quantities and concentrations of various materials that can be released into the environment; may limit or prohibit operation activities in certain ecologically sensitive and other protected areas; may regulate specific health and safety criteria addressing worker protection; may require compliance with operational and equipment standards; may impose testing, reporting and record-keeping requirements; and may require remedial measures to mitigate pollution from former and ongoing operations. Sanctions for noncompliance with such laws and regulations may include revocation of permits, corrective action orders, administrative or civil penalties, criminal prosecution and the imposition of injunctions to prohibit certain activities or force future compliance.

Some environmental laws and regulations provide for joint and several strict liability for remediation of spills and releases of hazardous substances. In addition, Apergy or its customers may be subject to claims alleging personal injury or property damage as a result of alleged exposure to hazardous substances, as well as

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damage to natural resources. These laws and regulations may expose Apergy or its customers to liability for the conduct of or conditions caused by others, or for Apergy’s acts or for the acts of Apergy’s customers that were in compliance with all applicable laws and regulations at the time such acts were performed. Any of these laws and regulations could result in claims, fines or expenditures that could be material to Apergy’s business, results of operations, financial condition and cash flows.

Environmental laws and regulations, and the interpretation and enforcement thereof, change frequently, and have tended to become more stringent over time. New laws and regulations may have a material adverse effect on Apergy’s customers by limiting or curtailing their exploration, drilling and production activities, which may adversely affect Apergy’s operations by limiting demand for Apergy’s products and services. Additionally, the implementation of new laws and regulations may have a material adverse effect on Apergy’s operating results by requiring Apergy to modify its operations or products or shut down some or all of its facilities.

Apergy is subject to risks relating to existing international operations and expansion into new geographical markets.

Approximately 24%, 26% and 25% of Apergy’s revenues for 2017, 2016 and 2015, respectively, were derived outside the U.S. Apergy continues to focus on penetrating global markets as part of its overall growth strategy and expects sales from outside the U.S. to continue to represent a significant portion of its revenues. Apergy’s international operations and its global expansion strategy are subject to general risks related to such operations, including:

If Apergy is unable to successfully manage the risks associated with expanding its global business or adequately manage operational risks of its existing international operations, the risks could have a material adverse effect on Apergy’s growth strategy involving expansion into new geographical markets, its reputation, its business, results of operations, financial condition and cash flows.

New tariffs and other trade measures could adversely affect our consolidated results of operations, financial position and cash flows.

Recently, the U.S. government imposed tariffs on steel and aluminum and a broad range of other products imported into the U.S. In response to the tariffs imposed by the U.S. government, the European Union, Canada, Mexico and China have announced tariffs on U.S. goods and services. The new tariffs have increased our manufacturing and material costs and any further trade restrictions, retaliatory trade measures and additional tariffs implemented could result in higher input costs to our products. We may not be able to fully mitigate the

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impact of these increased costs or pass price increases on to our customers. While tariffs and other retaliatory trade measures imposed by other countries on U.S. goods have not yet had a significant impact on our business or results of operations, we cannot predict further developments, and such existing or future tariffs could have a material adverse effect on our consolidated results of operations, financial position and cash flows.

Apergy’s business, profitability and reputation could be adversely affected by domestic and foreign governmental and public policy changes, risks associated with emerging markets, changes in statutory tax rates and laws, including recently enacted U.S. tax reform legislation, and unanticipated outcomes with respect to tax audits.

Apergy’s domestic and international sales and operations are subject to risks associated with changes in laws, regulations and policies (including environmental and employment regulations, export/import laws, tax policies such as export subsidy programs and research and experimentation credits, carbon emission regulations and other similar programs). Failure to comply with any of the foregoing could result in civil and criminal, monetary and non-monetary penalties, as well as damage to Apergy’s reputation. In addition, Apergy cannot provide assurance that its costs of complying with new and evolving regulatory reporting requirements and current or future laws, including environmental protection, employment, data security, data privacy and health and safety laws, will not exceed Apergy’s estimates. In addition, Apergy has made investments in certain countries, including Argentina, Australia, Bahrain, Colombia, Oman and Kenya, and may in the future invest in other countries, any of which may carry high levels of currency, political, compliance, or economic risk. While these risks or the impact of these risks are difficult to predict, any one or more of them could adversely affect Apergy’s business, profitability and reputation.

Apergy is subject to taxation in a number of jurisdictions. Accordingly, Apergy’s effective tax rate is impacted by changes in the mix among earnings in countries with differing statutory tax rates, changes in the valuation allowance of deferred tax assets, disagreements with taxing authorities with respect to the interpretation of tax laws and changes in tax laws. The amount of income taxes and other taxes paid could be adversely impacted by changes in statutory tax rates and laws (which have been and may in the future be under active consideration in various jurisdictions) and are subject to ongoing audits by domestic and international authorities. For example, the U.S. bill commonly referred to as the Tax Cuts and Jobs Act (“Tax Reform Act”), which was enacted on December 22, 2017, significantly changes U.S. tax law by, among other things, imposing a repatriation tax on deemed repatriated earnings of foreign subsidiaries and imposing limitations on the ability to deduct interest expense. If changes in statutory tax rates or laws or audits result in assessments different from amounts estimated, then Apergy’s business, results of operations, financial condition and cash flows may be adversely affected. In addition, changes in tax laws could have an adverse effect on our customers, resulting in lower demand for our products and services.

Failure to attract, retain and develop personnel for key management could have an adverse effect on Apergy’s results of operations, financial condition and cash flows.

Apergy’s growth, profitability and effectiveness in conducting its operations and executing its strategic plans depend in part on its ability to attract, retain and develop qualified personnel, align them with appropriate opportunities for key management positions and support for strategic initiatives. Additionally, during periods of increased investment in the oil and gas industry, competition to hire may increase and the availability of qualified personnel may be reduced. If Apergy is unsuccessful in its efforts to attract and retain qualified personnel, its business, results of operations, financial condition and cash flows could be adversely affected, its market share and competitive position could be adversely affected and/or Apergy could miss opportunities for growth and efficiencies.

The credit risks of Apergy’s customer base could result in losses.

Many of Apergy’s customers are oil and gas companies that have faced or may in the future face liquidity constraints during adverse commodity price environments like the recent industry downturn. These customers

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impact Apergy’s overall exposure to credit risk as they are also affected by prolonged changes in economic and industry conditions. If a significant number of Apergy’s customers experience a prolonged business decline or disruptions, Apergy may incur increased exposure to credit risk and bad debts.

Apergy’s revenue, operating profits and cash flows could be adversely affected if it is unable to protect or obtain patent and other intellectual property rights.

Apergy owns patents, trademarks, licenses and other forms of intellectual property related to its products and continuously invests in research and development that may result in innovations and general intellectual property rights. Apergy employs various measures to develop, maintain and protect its intellectual property rights. These measures may not be effective in capturing intellectual property rights, and they may not prevent Apergy’s intellectual property from being challenged, invalidated, or circumvented, particularly in countries where intellectual property rights are not highly developed or protected. Unauthorized use of Apergy’s intellectual property rights could adversely impact its competitive position and have a negative impact on its business, results of operations, financial condition and cash flows.

Climate change legislation and regulatory initiatives could result in increased compliance costs for Apergy and its customers.

Numerous proposals have been made and are likely to continue to be made at various levels of government to monitor and limit emissions of greenhouse gases (“GHG”). Past sessions of the U.S. Congress considered, but did not enact, legislation to address climate change. The EPA and other federal agencies under the previous administration issued regulations that aim to reduce GHG emissions; however, the current administration has more generally indicated an interest in scaling back or rescinding regulations addressing GHG emissions, including those affecting the U.S. oil and gas industry. It is difficult to predict the extent to which such policies will be implemented or the outcome of any related litigation. Any regulation of GHG emissions could result in increased compliance costs or additional operating restrictions for Apergy or its customers and limit or curtail exploration, drilling and production activities of Apergy’s customers, which could directly or indirectly, through reduced demand for Apergy’s products and services, adversely affect Apergy’s business, results of operations, financial condition and cash flows.

The loss of a significant customer could have an adverse impact on Apergy’s financial results.

Apergy’s customers represent some of the largest operators in the oil and gas drilling and production markets, including major integrated, large independent and foreign national oil and gas companies, as well as oil field equipment and service providers. In 2017, Apergy’s top 10 customers represented approximately 34% of total revenues, and no single customer accounted for more than 10% of Apergy’s revenues. While Apergy is not dependent on any one customer or group of customers, the loss of one or more of Apergy’s significant customers could have an adverse effect on its business, results of operations, financial condition and cash flows.

Apergy’s results may be impacted by current domestic and international economic conditions and uncertainties.

Apergy may be adversely affected by disruptions in the financial markets or declines in economic activity both domestically and internationally in those countries in which it operates. These circumstances will also impact Apergy’s suppliers and customers in various ways which could have an impact on Apergy’s business operations, particularly if global credit markets are not operating efficiently and effectively to support industrial commerce.

Apergy is subject to risk due to the volatility of global energy prices and regulations that impact drilling and production, with overall demand for Apergy’s products and services impacted by depletion rates, global economic conditions and related energy demands.

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Negative changes in worldwide economic and capital market conditions are beyond Apergy’s control, are highly unpredictable and can have an adverse effect on Apergy’s business, results of operations, financial condition, cash flows and cost of capital.

A significant decline in the future economic outlook of Apergy’s business and expected future cash flows could result in goodwill or intangible asset impairment charges, which would negatively impact its results of operations.

Apergy has significant goodwill and intangible assets. The valuation and classification of these assets and the assignment of useful lives involve significant judgments and the use of estimates. The testing of goodwill and intangibles for impairment requires significant use of judgment and assumptions, particularly as it relates to the determination of fair market value. A decrease in the long-term economic outlook and future cash flows of Apergy’s business could significantly impact asset values and potentially result in the impairment of intangible assets, including goodwill. Although fair values currently exceed carrying values for each reporting unit, the value of Apergy’s business was unfavorably impacted by the steep declines in revenue and order rates during 2015 and 2016 as drilling and production activity fell due to unfavorable oil prices and lower U.S. rig counts. Future economic declines could result in charges relating to impairments that could have a material adverse effect on Apergy’s results of operations in future periods.

Apergy’s reputation, ability to do business and results of operations may be impaired by improper conduct by any of its employees, agents or business partners.

While Apergy strives to maintain high standards, Apergy cannot provide assurance that its internal controls and compliance systems will always protect it from acts committed by its employees, agents or business partners that would violate U.S. and/or non-U.S. laws or fail to protect Apergy’s confidential information, including the laws governing payments to government officials, bribery, fraud, anti-kickback and false claims, competition, export and import compliance, money laundering and data privacy, as well as the improper use of proprietary information or social media. Any such violations of law or improper actions could subject Apergy to civil or criminal investigations in the U.S. and in other jurisdictions, could lead to substantial civil or criminal, monetary and non-monetary penalties and related stockholder lawsuits, could lead to increased costs of compliance and could damage Apergy’s reputation, its business, results of operations, financial condition and cash flows.

Apergy’s exposure to exchange rate fluctuations on cross-border transactions and the translation of local currency results into U.S. dollars could negatively impact its results of operations.

A portion of our business is transacted and/or denominated in foreign currencies, and fluctuations in currency exchange rates could have a significant impact on our reported results of operations, financial condition and cash flows, which are presented in U.S. dollars. Cross-border transactions, both with external parties and intercompany relationships, result in increased exposure to foreign exchange effects. Although the impact of foreign currency fluctuations on our results of operations has historically not been material, significant changes in currency exchange rates, principally the Canadian Dollar, Australian Dollar and Colombian Peso, could cause fluctuations in the reported results of Apergy’s business that could negatively affect its results of operations. Additionally, the strengthening of the U.S. dollar potentially exposes Apergy to competitive threats from lower cost producers in other countries and could result in unfavorable translation effects as the results of foreign locations are translated into U.S. dollars for reporting purposes.

Customer requirements and new regulations may increase Apergy’s expenses and impact the availability of certain raw materials, which could adversely affect its revenue and operating profits.

Apergy’s business uses parts or materials that are impacted by the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) requirement for disclosure of the use of “conflict minerals” mined in the Democratic Republic of the Congo and adjoining countries. It is possible that some of Apergy’s

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customers will require “conflict free” metals in products purchased from Apergy. Apergy is in the process of determining the country of origin of certain metals used by its business, as required by the Dodd-Frank Act. The supply chain due diligence and verification of sources may require several years to complete based on the current availability of smelter origin information and the number of vendors. Apergy may not be able to complete the process in the time frame required because of the complexity of its supply chain. Other governmental social responsibility regulations also may impact Apergy’s suppliers, manufacturing operations and operating profits.

The need to find alternative sources for certain raw materials or products because of customer requirements and regulations may impact Apergy’s ability to secure adequate supplies of raw materials or parts, lead to supply shortages, or adversely impact the prices at which its business can procure compliant goods.

Adverse and unusual weather conditions could have an adverse impact on Apergy’s business.

Apergy’s business could be materially and adversely affected by severe weather conditions. Hurricanes, tropical storms, flash floods, blizzards, cold weather and other severe weather conditions could result in evacuation of personnel, curtailment of services, damage to equipment and facilities, interruption in transportation of products and materials, and loss of productivity. For example, certain of Apergy’s manufactured products and components are manufactured at a single facility, and disruptions in operations or damage to any such facilities could reduce Apergy’s ability to produce products and satisfy customer demand. If Apergy’s customers are unable to operate or are required to reduce operations due to severe weather conditions, and as a result curtail purchases of Apergy’s products and services, Apergy’s business could be adversely affected.

Risks Related to the Separation

Apergy may not achieve some or all of the expected benefits of the Separation, and the Separation may adversely affect Apergy’s business.

Apergy may not be able to achieve the full strategic and financial benefits expected to result from the Separation, or such benefits may be delayed or not occur at all. The Separation is expected to provide the following benefits, among others:

Apergy may not achieve these and other anticipated benefits for a variety of reasons, including, among others: (a) the Separation requires significant amounts of management’s time and effort, which may divert management’s attention from operating and growing Apergy’s business; (b) Apergy’s stock price may be more susceptible to market fluctuations and other events particular to one or more of Apergy’s products than if it were still a part of Dover; and (c) Apergy’s business is less diversified than Dover’s business prior to the Separation. If Apergy fails to achieve some or all of the benefits expected to result from the Separation, or if such benefits are delayed, the business, results of operations, financial condition and cash flows of Apergy could be adversely affected.

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Prior to the Separation, Apergy had no history operating as an independent publicly traded company, and Apergy’s historical financial information is not necessarily representative of the results that it would have achieved as a separate, publicly traded company and therefore may not be a reliable indicator of its future results.

Apergy was spun-off from Dover, its former parent company, on May 9, 2018 and had no operating history as a separate publicly traded company prior to the Separation. The historical information about Apergy for periods prior to the Separation refer to Apergy’s business as part of Dover. Apergy’s historical financial information for such periods is derived from the financial statements and accounting records of Dover and, accordingly, does not necessarily reflect the financial condition, results of operations or cash flows that Apergy would have achieved as a separate, publicly traded company during such periods presented or those that Apergy will achieve in the future primarily as a result of the factors described below:

For additional information about the past financial performance of Apergy’s business prior to the Separation and the basis of presentation of the historical combined financial statements, see the sections entitled “Selected Historical Financial Data,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the historical financial statements and accompanying notes included elsewhere in this prospectus.

Dover may fail to perform under various transaction agreements executed as part of the Separation or Apergy may fail to have necessary systems and services in place when certain of the transaction agreements expire.

Apergy and Dover entered into certain agreements, such as the separation and distribution agreement, a transition services agreement and those other agreements discussed in greater detail in the section entitled “Certain Relationships and Related Person Transactions—Agreements with Dover,” which provide for the performance of services by each company for the benefit of the other for a period of time after the Separation. Apergy relies on Dover to satisfy its performance and payment obligations under these agreements. If Dover is unable to satisfy its obligations under these agreements, including its indemnification obligations, Apergy could incur operational difficulties or losses.

If Apergy does not have in place its own systems and services, does not have agreements with other providers of these services when the transitional or long-term agreements terminate, or if Apergy does not implement the new systems or replace Dover’s services successfully, Apergy may not be able to operate its business effectively, which could disrupt its business and have a material adverse effect on its business, results of operations, financial condition and cash flows. These systems and services may also be more expensive to install, implement and operate, or less efficient than the systems and services Dover is expected to provide during the transition period.

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Potential indemnification liabilities to Dover pursuant to the separation and distribution agreement could materially and adversely affect Apergy’s business, financial condition, results of operations and cash flows.

The separation and distribution agreement, among other things, provides for indemnification obligations designed to make Apergy financially responsible for substantially all liabilities that may exist relating to its business activities, whether incurred prior to or after the Separation. If Apergy is required to indemnify Dover under the circumstances set forth in the separation and distribution agreement, Apergy may be subject to substantial liabilities.

In connection with Apergy’s separation from Dover, Dover agreed to indemnify Apergy for certain liabilities. However, there can be no assurance that the indemnity will be sufficient to insure Apergy against the full amount of such liabilities, or that Dover’s ability to satisfy its indemnification obligation will not be impaired in the future.

Pursuant to the separation and distribution agreement and certain other agreements with Dover, Dover agreed to indemnify Apergy for certain liabilities as discussed further in “Certain Relationships and Related Person Transactions—Agreements with Dover.” However, third parties could also seek to hold Apergy responsible for any of the liabilities that Dover has agreed to retain, and there can be no assurance that the indemnity from Dover will be sufficient to protect Apergy against the full amount of such liabilities, or that Dover will be able to fully satisfy its indemnification obligations. In addition, Dover’s insurers may attempt to deny coverage to Apergy for liabilities associated with certain occurrences of indemnified liabilities prior to the Separation. Moreover, even if Apergy ultimately succeeds in recovering from Dover or such insurance providers any amounts for which Apergy is held liable, Apergy may be temporarily required to bear these losses. Each of these risks could negatively affect Apergy’s business, results of operations, financial condition and cash flows.

Apergy is subject to continuing contingent liabilities of Dover following the Separation.

There are several significant areas where the liabilities of Dover may become Apergy’s obligations. For example, under the U.S. Internal Revenue Code of 1986, as amended (the “Code”) and the related rules and regulations, each corporation that was a member of the Dover U.S. consolidated group during a taxable period or portion of a taxable period ending on or before the effective time of the distribution is jointly and severally liable for the U.S. federal income tax liability of the entire Dover U.S. consolidated group for that taxable period. Consequently, Apergy could be required to pay the entire amount of Dover’s consolidated U.S. federal income tax liability for a prior period, which could be substantial and in excess of the amount allocated to Apergy under the tax matters agreement between it and Dover. For a discussion of the tax matters agreement, see the section entitled “Certain Relationships and Related Person Transactions—Agreements with Dover—Tax Matters Agreement.” Other provisions of federal law establish similar liability for other matters, including laws governing tax-qualified pension plans as well as other contingent liabilities.

If the distribution, together with certain related transactions, does not qualify as a transaction that is generally tax-free for U.S. federal income tax purposes, Dover could be subject to significant tax liability and, in certain circumstances, Apergy could be required to indemnify Dover for material taxes pursuant to indemnification obligations under the tax matters agreement.

A condition to the Separation was the receipt by Dover of (i) a private letter ruling from the IRS (the “IRS Ruling”) together with an opinion of McDermott Will & Emery LLP, tax counsel to Dover, substantially to the effect that, among other things, the contribution and the distribution, taken together, would qualify as a tax-free reorganization for U.S. federal income tax purposes under Section 368(a)(1)(D) of the Code, and the distribution would qualify as a tax-free distribution to Dover’s stockholders under Section 355 of the Code or (ii) an opinion of McDermott Will & Emery LLP, tax counsel to Dover, substantially to the effect that, among other things, the contribution and the distribution, taken together, would qualify as a tax-free reorganization for U.S. federal income tax purposes under Section 368(a)(1)(D) of the Code and the distribution would qualify as a tax-free

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distribution to Dover’s stockholders under Section 355 of the Code. Prior to the distribution, Dover received the IRS Ruling. The IRS Ruling relies on, and the opinion of tax counsel relies on, certain facts and assumptions, and certain representations and undertakings from Dover and Apergy, including those regarding the past and future conduct of the companies’ respective businesses and other matters. If any of these facts, assumptions, representations or undertakings are incorrect or not satisfied, Dover and its stockholders may not be able to rely on the IRS Ruling or the opinion, and could be subject to significant tax liabilities. Notwithstanding the IRS Ruling and the opinion of tax counsel, the IRS could determine on audit that the distribution is taxable if it determines that any of these facts, assumptions, representations or undertakings are not correct or have been violated or if it disagrees with the conclusions in the opinion. In addition, Dover and Apergy intend for certain related transactions to qualify for tax-free treatment under U.S. federal, state and local tax law and/or foreign tax law.

If the distribution is determined to be taxable for U.S. federal income tax purposes, Dover and its stockholders that are subject to U.S. federal income tax could incur significant U.S. federal income tax liabilities. For example, if the distribution fails to qualify for tax-free treatment, Dover would for U.S. federal income tax purposes be treated as if it had sold the Apergy common stock in a taxable sale for its fair market value, and Dover’s stockholders who are subject to U.S. federal income tax would be treated as receiving a taxable distribution in an amount equal to the fair market value of the Apergy common stock received in the distribution. In addition, if certain related transactions fail to qualify for tax-free treatment under U.S. federal, state and local tax law and/or foreign tax law, Dover (and, under the tax matters agreement described below, Apergy) could incur significant tax liabilities under U.S. federal, state, local and/or foreign tax law, respectively.

Under the tax matters agreement between Dover and Apergy, Apergy would generally be required to indemnify Dover for taxes incurred by Dover that arise as a result of Apergy’s taking or failing to take, as the case may be, certain actions or any breach of any representations made by Apergy that, in either case, result in the distribution failing to meet the requirements of a tax-free distribution under Section 355 of the Code or of such related transactions failing to qualify for tax-free treatment. Also, under the tax matters agreement, Apergy would generally be required to indemnify Dover for one-half of taxes and other liabilities incurred by Dover if the distribution fails to meet the requirements of a tax-free distribution under Section 355 of the Code for reasons other than an act or failure to act on the part of Apergy or Dover, and therefore Apergy might be required to indemnify Dover for such taxes and liabilities due to circumstances and events not within the control of Apergy. Under the tax matters agreement, Apergy is also required to indemnify Dover for one-half of certain taxes incurred as a result of the restructuring activities undertaken to effectuate the distribution, whether payable upon filing tax returns related to the restructuring and distribution or upon a subsequent audit of those returns. Apergy’s indemnification obligations to Dover under the tax matters agreement are not limited by a maximum amount. If Apergy is required to indemnify Dover under the circumstances set forth in the tax matters agreement, Apergy may be subject to substantial liabilities, which could materially adversely affect its business, results of operations, financial condition and cash flows.

Under the tax matters agreement between Dover and Apergy, Dover may, in its sole discretion, make protective elections under Section 336(e) of the Code for Apergy and some or all of its domestic subsidiaries with respect to the distribution. If, notwithstanding the IRS Ruling and the opinion of tax counsel, the distribution fails to qualify as tax-free under Section 355 of the Code, the Section 336(e) elections would generally cause deemed sales of the assets of Apergy and its electing subsidiaries, causing the Dover group to recognize a gain to the extent the fair market value of the assets exceeded the basis of Apergy and its electing subsidiaries in such assets. In such case, to the extent that Dover is responsible for the resulting transaction taxes, Apergy generally would be required under the tax matters agreement to make periodic payments to Dover equal to the tax savings arising from a “step up” in the tax basis of Apergy’s assets.

Apergy may not be able to engage in certain corporate transactions as a result of the Separation.

To preserve the tax-free treatment to Dover and its stockholders of the contribution and the distribution and certain related transactions, under the tax matters agreement that Apergy entered into with Dover, Apergy is

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restricted from taking any action following the distribution that prevents the distribution and related transactions from being tax-free for U.S. federal income tax purposes. Under the tax matters agreement, for the two-year period following the distribution, Apergy may be prohibited, except in certain circumstances, from:

These restrictions may limit Apergy’s ability to pursue certain strategic transactions or other transactions that it may believe to be in the best interests of its stockholders or that might increase the value of its business. In addition, under the tax matters agreement, Apergy may be required to indemnify Dover against all or a portion of such tax liabilities as a result of the acquisition of Apergy’s stock or assets, even if it did not participate in or otherwise facilitate the acquisition. For more information, see the section entitled “Certain Relationships and Related Person Transactions—Agreements with Dover—Tax Matters Agreement.”

The spin-off and related internal restructuring transactions may expose Apergy to potential liabilities arising out of state and federal fraudulent conveyance laws and legal dividend requirements.

If Dover files for bankruptcy or is otherwise determined or deemed to be insolvent under federal bankruptcy laws, a court could deem the spin-off or certain internal restructuring transactions undertaken by Dover in connection with the Separation to be a fraudulent conveyance or transfer. Fraudulent conveyances or transfers are defined to include transfers made or obligations incurred with the actual intent to hinder, delay or defraud current or future creditors or transfers made or obligations incurred for less than reasonably equivalent value when the debtor was insolvent, or that rendered the debtor insolvent, inadequately capitalized or unable to pay its debts as they become due. A court could void the transactions or impose substantial liabilities upon Apergy, which could adversely affect Apergy’s financial condition and its results of operations. Among other things, the court could require Apergy’s stockholders to return to Dover some or all of the shares of its common stock issued in the spin-off, or require Apergy to fund liabilities of other companies involved in the restructuring transactions for the benefit of creditors.

The distribution of Apergy’s common stock is also subject to review under state corporate distribution statutes. Under the Delaware General Corporation Law, a corporation may only pay dividends to its stockholders either (i) out of its surplus (net assets minus capital) or (ii) if there is no such surplus, out of its net profits for the fiscal year in which the dividend is declared and/or the preceding fiscal year. Although Dover made the distribution of Apergy’s common stock entirely out of surplus, Apergy cannot assure you that a court will not later determine that some or all of the distribution to Dover stockholders was unlawful.

Certain of Apergy’s executive officers and directors may have actual or potential conflicts of interest because of their previous positions at Dover.

Because of their former positions with Dover, certain of Apergy’s executive officers and directors own equity interests in Dover. Even though Apergy’s Board of Directors consists of a majority of directors who are independent, and Apergy’s executive officers who were formerly employees of Dover ceased to be employees of Dover upon the Separation, some of Apergy’s executive officers and directors will continue to have a financial

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interest in shares of Dover’s common stock. Continuing ownership of shares of Dover’s common stock and equity awards could create, or appear to create, potential conflicts of interest if Apergy and Dover pursue the same corporate opportunities or face decisions that could have different implications for Dover and Apergy.

Apergy may have received better terms from unaffiliated third parties than the terms it received in its agreements with Dover.

The agreements Apergy entered into with Dover in connection with the Separation, including the separation and distribution agreement, transition services agreement, tax matters agreement and employee matters agreement, which were prepared in the context of Apergy’s separation from Dover while Apergy was still a wholly owned subsidiary of Dover. Accordingly, during the period in which the terms of those agreements were prepared, Apergy did not have an independent board of directors or a management team that was independent of Dover. As a result, the terms of those agreements may not reflect terms that would have resulted from arm’s-length negotiations between unaffiliated third parties. Arm’s-length negotiations between Dover and an unaffiliated third party in another form of transaction, such as a buyer in a sale of a business transaction, may have resulted in more favorable terms to the unaffiliated third party. For more information, see the section entitled “Certain Relationships and Related Person Transactions—Agreements with Dover.”

Apergy’s accounting and other management systems and resources may not be adequately prepared to meet the financial reporting and other requirements to which it is subject following the Separation.

Prior to the Separation, Apergy’s financial results were included within the consolidated results of Dover, and Apergy believes that its financial reporting and internal controls were appropriate for a subsidiary of a public company. However, Apergy is now directly subject to the reporting and other requirements of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). In addition, the Indenture requires that we file annual, quarterly and current reports with respect to our business and financial condition. Beginning with our Annual Report on Form 10-K for the year ending December 31, 2019, Apergy will be required to comply with Section 404 of the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act”), which will require annual management assessments of the effectiveness of Apergy’s internal control over financial reporting. Apergy’s independent registered public accounting firm is not required to express an opinion as to the effectiveness of its internal control over financial reporting until after Apergy is no longer an “emerging growth company,” as defined in the Jumpstart Our Business Startups Act (“JOBS Act”). These reporting and other obligations may place significant demands on its management, administrative and operational resources, including accounting systems and resources.

The Exchange Act requires that Apergy file annual, quarterly and current reports with respect to its business and financial condition. Under the Sarbanes-Oxley Act, Apergy is required to maintain effective disclosure controls and procedures and internal control over financial reporting. To comply with these requirements, Apergy may need to upgrade its systems, implement additional financial and management controls, reporting systems and procedures and/or hire additional accounting and finance staff. Apergy expects to incur additional annual expenses for the purpose of addressing these requirements, and those expenses may be significant. If Apergy is unable to upgrade its financial and management controls, reporting systems, information technology systems and procedures in a timely and effective fashion, Apergy’s ability to comply with its financial reporting requirements and other rules that apply to reporting companies under the Exchange Act could be impaired. Any failure to achieve and maintain effective internal controls could have a material adverse effect on Apergy’s business, results of operations, financial condition or cash flows.

Apergy is an emerging growth company, and any decision on its part to comply with certain reduced reporting and disclosure requirements applicable to emerging growth companies could make its securities less attractive to investors.

Apergy is an emerging growth company, and, for as long as it continues to be an emerging growth company, Apergy currently intends to take advantage of exemptions from various reporting requirements applicable to

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public companies other than “emerging growth companies,” including, but not limited to, not being required to have its independent registered public accounting firm audit its internal control over financial reporting under Section 404 of the Sarbanes-Oxley Act, reduced disclosure obligations regarding executive compensation in its registration statements, periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. Apergy could be an emerging growth company for up to five years following the completion of the spin-off. Apergy will cease to be an emerging growth company upon the earliest of: (1) the end of the fiscal year following the fifth anniversary of the spin-off; (2) the first fiscal year after its annual gross revenues are $1.07 billion or more; (3) the date on which Apergy has, during the previous three-year period, issued more than $1.0 billion in non-convertible debt securities; or (4) the date on which Apergy is deemed to be a “large accelerated filer” under the Exchange Act. Apergy cannot predict if investors will find its securities less attractive if Apergy chooses to rely on these exemptions. If some investors find its securities less attractive as a result of any choices to reduce future disclosure, there may be a less active trading market for its securities and the price of its securities may be more volatile.

Under the JOBS Act, emerging growth companies can also delay adopting new or revised accounting standards until such time as those standards apply to private companies. Apergy has irrevocably elected not to avail itself of this accommodation allowing for delayed adoption of new or revised accounting standards, and, therefore, Apergy will be subject to the same new or revised accounting standards as other public companies that are not emerging growth companies.

Risks Related to the Exchange Offer

There may be adverse consequences if you do not exchange your outstanding notes.

If you do not exchange your outstanding notes for exchange notes in the exchange offer, you will continue to be subject to restrictions on transfer of your outstanding notes as set forth in the offering memorandum distributed in connection with the May 2018 private offering of the outstanding notes. In general, the outstanding notes may not be offered or sold unless they are registered or exempt from registration under the Securities Act and applicable state securities laws. Except as required by the registration rights agreement, we do not intend to register resales of the outstanding notes under the Securities Act. You should refer to “Summary—The Exchange Offer” and “The Exchange Offer” for information about how to tender your outstanding notes.

The tender of outstanding notes under the exchange offer will reduce the outstanding amount of the outstanding notes, which may have an adverse effect upon, and increase the volatility of, the market prices of the outstanding notes due to a reduction in liquidity.

Your ability to transfer the exchange notes may be limited if there is no active trading market, and there is no assurance that any active trading market will develop for the exchange notes.

We are offering the exchange notes to the holders of the outstanding notes. We do not intend to list the notes on any securities exchange. There is currently no established market for the exchange notes, and we cannot assure you as to the liquidity of markets that may develop for the exchange notes, your ability to sell the exchange notes or the price at which you would be able to sell the exchange notes. If such markets were to exist, the exchange notes could trade at prices that may be lower than their principal amount or purchase price depending on many factors, including prevailing interest rates, the market for similar notes, our financial and operating performance and other factors. We cannot assure you that an active market for the exchange notes will develop or, if developed, that it will continue. If no active trading market develops, you may not be able to resell the notes at their fair market value or at all.

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Certain persons who participate in the exchange offer must deliver a prospectus in connection with resales of the exchange notes.

We have not requested, and do not intend to request, an interpretation by the staff of the SEC as to whether the exchange notes issued pursuant to our exchange offer in exchange for the outstanding notes may be offered for resale, resold or otherwise transferred by any holder without compliance with the registration and prospectus delivery provisions of the Securities Act. Instead, based on interpretations of the staff of the SEC contained in Exxon Capital Holdings Corp., SEC no-action letter (April 13, 1988), Morgan Stanley & Co. Inc., SEC no-action letter (June 5, 1991) and Shearman & Sterling, SEC no-action letter (July 2, 1983), we believe that you may offer for resale, resell or otherwise transfer the exchange notes without compliance with the registration and prospectus delivery requirements of the Securities Act. We cannot guarantee that the SEC would make a similar decision about our exchange offer. If our belief is wrong, or if you cannot truthfully make the representations mentioned above, and you transfer any exchange note issued to you in the exchange offer without meeting the registration and prospectus delivery requirements of the Securities Act, or without an exemption from such requirements, you could incur liability under the Securities Act. Additionally, in some instances described in this prospectus under “Plan of Distribution,” certain holders of exchange notes will remain obligated to comply with the registration and prospectus delivery requirements of the Securities Act to transfer the exchange notes. If such a holder transfers any exchange notes without delivering a prospectus meeting the requirements of the Securities Act or without an applicable exemption from registration under the Securities Act, such a holder may incur liability under the Securities Act. We do not and will not assume, or indemnify such a holder against, this liability.

Risks related to Holding the Exchange Notes

Our indebtedness could adversely affect our financial condition and operating flexibility and prevent us from fulfilling our obligations under the notes.

In connection with the Separation, we incurred a significant amount of indebtedness. Subject to the limits contained in the credit agreement governing the Senior Secured Credit Facilities and the Indenture, we may be able to incur substantial additional indebtedness from time to time to finance working capital, capital expenditures, investments or acquisitions, or for other purposes. If we do so, the risks related to our level of indebtedness could intensify.

Specifically, our level of indebtedness could have important consequences, including:

In addition, the credit agreement governing the Senior Secured Credit Facilities and the Indenture contain restrictive covenants that limit our ability to engage in activities that may be in our long-term interests. Our failure to comply with these covenants could result in an event of default which, if not cured or waived, could result in the acceleration of all our indebtedness.

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Our ability to make payments on and to refinance our indebtedness as well as any future indebtedness that we may incur depends upon the level of cash flows generated by our operations, our ability to sell assets, availability under the Revolving Credit Facility and our ability to access the capital markets and/or other sources of financing. Our ability to generate cash is subject to general economic, industry, financial, competitive, legislative, regulatory and other factors that are beyond our control. If we are not able to repay or refinance our indebtedness as it becomes due, we may be forced to sell assets or take other disadvantageous actions, including (i) reducing financing in the future for working capital, capital expenditures, acquisitions and general corporate purposes or (ii) dedicating an unsustainable level of our cash flow from operations to the payment of principal and interest on our indebtedness. In addition, our ability to withstand competitive pressures and to react to changes in the oil and gas industry could be impaired.

Despite our current level of indebtedness and restrictive covenants, we and our subsidiaries may still be able to incur substantially more indebtedness or make certain restricted payments, which could further exacerbate the risks to our financial condition described above.

We and our subsidiaries may be able to incur significant additional indebtedness, including additional secured indebtedness, in the future. Although the credit agreement governing the Senior Secured Credit Facilities and the Indenture contain restrictions on the incurrence of additional indebtedness and liens, these restrictions are subject to a number of qualifications and exceptions, and the additional indebtedness and liens incurred in compliance with these restrictions could be substantial. As of September 30, 2018, the Revolving Credit Facility had unused commitments of up to approximately $250 million (less the amount of any outstanding letters of credit issued thereunder). All of those borrowings would be secured and therefore would be effectively senior to the notes and the guarantees by the Guarantors to the extent of the assets securing such indebtedness.

The Indenture permits us to incur certain additional indebtedness, including secured indebtedness, and will allow our non-Guarantor subsidiaries to incur additional indebtedness that would be structurally senior to the notes, and the Indenture does not prevent us from incurring other liabilities that do not constitute indebtedness as defined in the Indenture. If we incur any additional indebtedness that ranks equally with the notes, including any additional notes, the holders of that indebtedness will be entitled to share ratably with you in any proceeds distributed in connection with any insolvency, liquidation, reorganization, dissolution or other winding up of our company. This may have the effect of reducing the amount of proceeds paid to you.

We are permitted under certain circumstances to designate some of our restricted subsidiaries under the Indenture as unrestricted subsidiaries. Those unrestricted subsidiaries will not be subject to many of the restrictive covenants in the Indenture and therefore will be able to incur indebtedness beyond the limitations specified in the Indenture and engage in other activities in which restricted subsidiaries may not engage.

We may also pursue investments in joint ventures or acquisitions, which may increase our indebtedness. Moreover, although the credit agreement governing the Senior Secured Credit Facilities and the Indenture contains restrictions on our ability to make restricted payments, including the declaration and payment of dividends, we will be able to make substantial restricted payments under certain circumstances. If new indebtedness is added to our current indebtedness levels, the related risks that we and the Guarantors now face could intensify.

The terms of the credit agreement governing the Senior Secured Credit Facilities and the Indenture restrict, and the documents governing other indebtedness that we may incur in the future may restrict, our current and future operations, particularly our ability to respond to changes or to take certain actions.

The credit agreement governing the Senior Secured Credit Facilities and the Indenture contain, and the documents governing other indebtedness that we may incur in the future may contain, a number of restrictive

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covenants that impose significant operating and financial restrictions on us and may limit our ability to engage in acts that may be in our long-term best interests, including restrictions on our ability to:

You should read the discussions under the headings “Description of the Exchange Notes—Certain Covenants” and See in Note 8—“Debt” accompanying the Interim Financial Statements (as defined herein) for further information about these covenants.

In addition, the restrictive covenants in the credit agreement governing the Senior Secured Credit Facilities require us to maintain specified financial ratios and satisfy other financial condition tests to the extent subject to certain financial covenant conditions. Our ability to meet those financial ratios and tests can be affected by events beyond our control. We may not meet those ratios and tests.

A breach of the covenants or restrictions under the Indenture or under the credit agreement governing the Senior Secured Credit Facilities could result in an event of default under the applicable indebtedness. Such a default may allow the creditors under such facility to accelerate the related indebtedness, which may result in the acceleration of any other indebtedness to which a cross-acceleration or cross-default provision applies. In addition, an event of default under the credit agreement governing the Senior Secured Credit Facilities would permit the lenders under our Revolving Credit Facility to terminate all commitments to extend further credit under that facility. Furthermore, if we were unable to repay the amounts due and payable under the Senior Secured Credit Facilities, those lenders could proceed against the collateral granted to them to secure that indebtedness. We will pledge substantially all of our assets as collateral under the Senior Secured Credit Facilities. In the event our lenders or holders of the notes accelerate the repayment of our borrowings, we may not have sufficient assets to repay that indebtedness or be able to borrow sufficient funds to refinance it. Even if we are able to obtain new financing, it may not be on commercially reasonable terms or on terms acceptable to us. As a result of these restrictions, we may be:

These restrictions, along with restrictions that may be contained in agreements evidencing or governing other future indebtedness, may affect our ability to grow in accordance with our growth strategy.

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If we default on our obligations to pay our other indebtedness, we may not be able to make payments on the notes.

Any default under the agreements governing our indebtedness, including a default under the credit agreement governing the Senior Secured Credit Facilities, that is not waived by the required lenders, and the remedies sought by the holders of such indebtedness could make us unable to pay principal, premium, if any, and interest on the notes and substantially decrease the market value of the notes. If we are unable to generate sufficient cash flow and are otherwise unable to obtain funds necessary to meet required payments of principal, premium, if any, and interest on our indebtedness, or if we otherwise fail to comply with the various covenants, including financial and operating covenants, in the instruments governing our indebtedness (including the credit agreement governing the Senior Secured Credit Facilities), we could be in default under the terms of the agreements governing such indebtedness.

In the event of such default, the holders of such indebtedness could elect to declare all the funds borrowed thereunder to be due and payable, together with accrued and unpaid interest, the lenders of our Revolving Credit Facility could elect to terminate their commitments and cease making further loans and the holders of such indebtedness could institute foreclosure proceedings against our assets, and we could be forced into bankruptcy or liquidation. Upon any bankruptcy filing, we would be stayed from making any ongoing payments on the notes (and any Guarantor that had also filed for bankruptcy would also be stayed from making any ongoing payments on the applicable guarantee), and the holders of the notes would not be legally entitled to receive post-petition interest or applicable fees, costs or charges, or any “adequate protection” under Title 11 of the United States Code (the “Bankruptcy Code”). Furthermore, if a bankruptcy case were to be commenced under the Bankruptcy Code, any payments made by us or a Guarantor within 90 days prior to commencement of such a case, could be subject to claims that we or such Guarantor were insolvent at the time any such payments were made and that all or a portion of such payments, which could include repayments of amounts due under the notes or a guarantee, might be deemed to constitute a preference under the Bankruptcy Code, and that such payments should be voided by the bankruptcy court and recovered from the recipients for the benefit of the entire bankruptcy estate. Also, in the event that we were to become a debtor in a bankruptcy case seeking reorganization or other relief under the Bankruptcy Code, a delay and/or substantial reduction in payments under the notes may otherwise occur. In addition, if our operating performance declines, or if we breach our covenants under our indebtedness, we may in the future need to seek waivers from the holders of such indebtedness and the required lenders under the Senior Secured Credit Facilities to avoid being in default. In such a case, we may not be able to obtain a waiver from the holders of such indebtedness and the required lenders on terms acceptable to us, or at all. If this occurs, we could be forced into bankruptcy or liquidation, and we may not be able to make payments on the notes.

Our variable rate indebtedness subjects us to interest rate risk, which could cause our debt service obligations to increase significantly.

Borrowings under our Senior Secured Credit Facilities are at variable rates of interest and expose us to interest rate risk. If interest rates increase, our debt service obligations on the variable rate indebtedness could increase even though the amount borrowed remains the same, and our net income and cash flows, including cash available for servicing our indebtedness, would correspondingly decrease. As of September 30, 2018, approximately $395.0 million of our indebtedness (net of original issue discount and deferred financing costs) was variable rate debt. In the future, we may enter into interest rate swaps that involve the exchange of floating for fixed rate interest payments in order to reduce interest rate volatility. However, we may not maintain interest rate swaps with respect to all of our variable rate indebtedness, and any swaps we enter into may not fully mitigate our interest rate risk.

Repayment of our debt, including the notes, is dependent on cash flow generated by Apergy’s subsidiaries.

Apergy is a holding company and all of our tangible assets are owned by Apergy’s subsidiaries. As such, repayment of our indebtedness is dependent on the generation of cash flow by our subsidiaries and their ability to

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make such cash available to Apergy, directly or indirectly, by dividend, loan, debt repayment or otherwise. Unless they are Guarantors of the notes, Apergy’s subsidiaries do not have any obligation to pay amounts due on the notes or to make funds available for that purpose. Apergy’s subsidiaries may not be able to, or be permitted to, make distributions or other payments to enable Apergy to make payments in respect of the notes. Each of Apergy’s subsidiaries is a distinct legal entity and, under certain circumstances, legal and contractual restrictions may limit Apergy’s ability to obtain cash from its subsidiaries. While the terms of the Indenture and the credit agreement governing the Senior Secured Credit Facilities will limit the ability of Apergy’s subsidiaries to incur consensual restrictions on their ability to pay dividends or make other intercompany payments, these limitations are subject to waiver and to important qualifications and exceptions. In the event that Apergy does not receive distributions or other payments from its subsidiaries, Apergy may be unable to make required payments on the notes.

Your right to receive payments on the notes is effectively junior to the right of lenders who have a security interest in our assets to the extent of the value of those assets.

Our obligations under the notes and our Guarantors’ obligations under their guarantees of the notes are unsecured, but our obligations under the Senior Secured Credit Facilities and each Guarantor’s obligations under its guarantee of the Senior Secured Credit Facilities are secured by a security interest in substantially all of our domestic tangible and intangible assets, including the stock of substantially all of our 100% owned domestic subsidiaries. If we are declared bankrupt or insolvent, or if we default under the Senior Secured Credit Facilities, the lenders could declare all of the funds borrowed thereunder, together with accrued interest, immediately due and payable. If we were unable to repay such indebtedness, the lenders could foreclose on the pledged assets to the exclusion of holders of the notes, even if an event of default exists under the Indenture at such time. Furthermore, if the lenders foreclose and sell the pledged equity interests in any Guarantor under the notes, then that Guarantor will be released from its guarantee of the notes automatically and immediately upon such sale. In any such event, because the notes will not be secured by any of our assets or the equity interests in the Guarantors, it is possible that there would be no assets remaining from which your claims could be satisfied or, if any assets remained, they might be insufficient to satisfy your claims in full.

Claims of holders of the notes will be structurally subordinated to all obligations of our existing and future subsidiaries that do not become Guarantors of the notes.

The notes will be guaranteed, jointly and severally, by all existing and future direct and indirect 100% owned domestic subsidiaries of Apergy that incur or that guarantee any obligations under the Senior Secured Credit Facilities or certain series of capital markets debt securities (other than the notes) of Apergy or any Guarantor. Our subsidiaries that do not guarantee the notes, including any foreign subsidiaries and any subsidiaries that we designate as unrestricted, will have no obligation, contingent or otherwise, to pay amounts due under the notes or to make any funds available to pay those amounts, whether by dividend, distribution, loan or other payment. Claims of holders of the notes will be structurally subordinated to all indebtedness and other obligations and liabilities of any non-Guarantor subsidiary such that in the event of insolvency, liquidation, reorganization, dissolution or other winding up of any subsidiary that is not a Guarantor, all of that subsidiary’s creditors (including trade creditors) would be entitled to payment in full out of that subsidiary’s assets before we would be entitled to any payment.

In addition, any dividend or other distribution made by a non-100% owned non-Guarantor subsidiary, such as a joint venture, would need to be made ratably to other equity holders and us. These non-100% owned subsidiaries may also be subject to restrictions on their ability to distribute cash to Apergy or a Guarantor in their financing or other agreements and, as a result, we may not be able to access their cash flow to service our debt obligations, including in respect of the notes.

The Indenture, subject to some limitations, permits our subsidiaries that do not guarantee the notes to incur additional indebtedness and does not contain any limitation on the amount of other liabilities, such as trade payables, that may be incurred by these subsidiaries.

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As of the date hereof, we have 20 non-U.S. subsidiaries that do not guarantee the notes (including Apergy Middle East Services LLC (f/k/a Norris Production Solutions Middle East LLC), a subsidiary company in the Sultanate of Oman in which we own a 60% equity interest (“AMES”)).

In addition, our subsidiaries that provide, or will provide, guarantees of the notes will be automatically released from those guarantees upon the occurrence of certain events, including the following:

If any subsidiary guarantee is released, no holder of the notes will have a claim as a creditor against that subsidiary, and the indebtedness and other liabilities, including trade payables and preferred stock, if any, whether secured or unsecured, of that subsidiary will be effectively senior to the claim of any holders of the notes. See “Description of the Exchange Notes—Guarantees.”

The Indenture also permits us to designate certain of our subsidiaries as unrestricted subsidiaries, which subsidiaries would not be subject to the restrictive covenants in the Indenture. This means that these entities would be able to engage in many of the activities the Indenture restricts for Apergy and its restricted subsidiaries, such as incurring substantial additional indebtedness (secured or unsecured), making investments, selling, encumbering or disposing of substantial assets, entering into transactions with affiliates and entering into mergers or other business combinations. These actions could be detrimental to our ability to make payments when due and to comply with our other obligations under the notes, and could reduce the amount of our assets that would be available to satisfy your claims should we default on the notes. In addition, the initiation of bankruptcy or insolvency proceedings or the entering of a judgment against these entities, or their default under their other credit arrangements, will not result in a default under the notes.

The lenders under the Senior Secured Credit Facilities will have the discretion to release any Guarantors under those facilities in a variety of circumstances, which will cause those Guarantors to be released from their guarantees of the notes.

While any obligations under the Senior Secured Credit Facilities remain outstanding, any guarantee of the notes may be released without action by, or consent of, any holder of the notes or the Trustee, at the discretion of lenders under the Senior Secured Credit Facilities, if the related Guarantor is no longer a Guarantor of obligations under the Senior Secured Credit Facilities or certain other indebtedness. The lenders under the Senior Secured Credit Facilities will have the discretion to release the guarantees under the Senior Secured Credit Facilities in a variety of circumstances. Any of our subsidiaries that are released as a Guarantor of the Senior Secured Credit Facilities will automatically be released as a Guarantor of the notes. You will not have a claim as a creditor against any subsidiary that is no longer a Guarantor of the notes, and the indebtedness and other liabilities, including trade payables, whether secured or unsecured, of those subsidiaries will effectively be senior to claims of notes.

Because each Guarantor’s liability under its guarantees may be reduced to zero, voided or released under certain circumstances, holders of notes may not receive any payments from some or all of the Guarantors.

Holders of notes have the benefit of the guarantees of the Guarantors. However, by their terms, the guarantees by the Guarantors are limited to the maximum amount that the Guarantors are permitted to guarantee under applicable law. Further, under the circumstances discussed more fully below, a court under federal and state fraudulent conveyance and transfer statutes could void or reduce the obligations under a guarantee or further

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subordinate it to all other obligations of the Guarantor. See “—Federal and state statutes allow courts, under specific circumstances, to void the notes and the guarantee of the notes by certain of our subsidiaries and to require holders of notes to return payments received from us, and if that occurs, you may not receive any payments on the notes.” As a result, a Guarantor’s liability under its guarantee could be reduced to zero or to another amount that would significantly reduce the value of the guarantee, depending upon, among other things, the amount of other obligations of such Guarantor. In addition, you will lose the benefit of a particular guarantee if it is released under certain circumstances described under “Description of the Exchange Notes—Guarantees.”

We may not be able to repurchase the notes upon a change of control.

Upon the occurrence of specific kinds of change of control events, we will be required to make an offer to purchase all of the notes at 101% of the aggregate principal amount thereof plus accrued and unpaid interest, if any, up to but excluding the date of repurchase. Additionally, under the credit agreement governing the Senior Secured Credit Facilities, a change of control (as defined therein) will constitute an event of default that permits the lenders to accelerate the maturity of borrowings under the credit agreement and terminate their commitments to lend. The source of funds for any purchase of the notes and repayment of borrowings under the Senior Secured Credit Facilities would be our available cash or cash generated from our subsidiaries’ operations or other sources, including borrowings, sales of assets or sales of equity. We may not be able to repurchase the notes upon a change of control because we may not have sufficient financial resources to purchase all of the debt securities that are tendered upon a change of control and repay our other indebtedness that will become due. If we fail to repurchase the notes in that circumstance, we will be in default under the indenture that will govern the notes. We may require additional financing from third parties to fund any such purchases, and we may be unable to obtain financing on satisfactory terms, or at all. Further, our ability to repurchase the notes may be limited by law. In order to avoid the obligations to repurchase the notes and events of default and potential breaches of the credit agreement governing the Senior Secured Credit Facilities, we may have to avoid certain change of control transactions that would otherwise be beneficial to us.

In addition, some important corporate events, such as leveraged recapitalizations, may not, under the Indenture, constitute a “change of control” that would require us to repurchase the notes, even though those corporate events could increase the level of our indebtedness or otherwise adversely affect our capital structure, credit ratings or the value of the notes. In addition, the occurrence of certain events that might otherwise constitute a “change of control” under the Indenture will not be deemed to be a “change of control repurchase event” if the notes have an investment grade rating from both Moody’s Investors Service, Inc. (together with any successor to its rating agency business, “Moody’s”) and Standard & Poor’s Ratings Services (together with any successor to its rating agency business, “S&P”) during the period (the “Trigger Period”) commencing 60 days prior to the first public announcement by Apergy of any “change of control” (or pending “change of control”) and ending 60 days following consummation of such “change of control” (which Trigger Period will be extended following consummation of a “change of control” for up to an additional 60 days for so long as any of Moody’s or S&P has publicly announced that it is considering a possible ratings change). See “Description of the Exchange Notes—Repurchase at the Option of Holders—Change of control repurchase event.”

Holders of the notes may not be able to determine when a change of control giving rise to their right to have the notes repurchased has occurred following a sale of “substantially all” of our assets.

The definition of change of control in the Indenture includes a phrase relating to the sale of “all or substantially all” of our assets. There is no precise established definition of the phrase “substantially all” under applicable law. Accordingly, the ability of a holder of the notes to require us to repurchase its notes as a result of a sale of less than all our assets to another person may be uncertain.

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Federal and state statutes allow courts, under specific circumstances, to void the notes and the guarantee of the notes by certain of our subsidiaries and to require holders of notes to return payments received from us, and if that occurs, you may not receive any payments on the notes.

Our issuance of the notes and the guarantee of the notes by certain of our subsidiaries may be subject to review under federal bankruptcy law and comparable provisions of state fraudulent transfer or fraudulent conveyance laws. While the relevant laws may vary from state to state, under such laws, the issuance of the notes or a guarantee could be voided, or claims in respect of the notes or a guarantee could be subordinated to all other debts of Apergy or of a Guarantor, as applicable, if, among other things, Apergy or the applicable Guarantor, at the time it incurred the indebtedness:

A court might also void the notes or a guarantee without regard to the above factors, if the court found that we or the applicable Guarantor issued the notes or entered into its guarantee with the actual intent to hinder, delay or defraud its creditors.

In addition, any payment by us or that Guarantor pursuant to the notes or a guarantee, as applicable, could be voided and required to be returned to us or the Guarantor, as applicable, or to a fund for the benefit of our creditors or the creditors of the Guarantor. If the notes or guarantees were voided or limited under fraudulent transfer or other laws, any claim you may make against Apergy or the Guarantors for amounts payable on the notes would be unenforceable to the extent of such voidance or limitation. Moreover, the court could order you to return any payments previously made by Apergy or the Guarantors.

The measures of insolvency for purposes of these laws will vary depending upon the law applied in any proceeding to determine whether a voidable transfer has occurred, such that we cannot assure you as to what standard a court would apply in making these determinations or, regardless of the standard that a court uses, that any payments to the holders of the notes or under the guarantees did not constitute preferences, fraudulent transfers or conveyances on other grounds. Generally, however, our company or a Guarantor would be considered insolvent if:

On the basis of historical financial information, recent operating history and other factors, we believe that Apergy and each Guarantor is solvent, does not have unreasonably small capital for the business in which it is engaged and has not incurred debts beyond its ability to pay such debts as they mature. We cannot assure you, however, that a court would agree with our conclusions in this regard.

If a court were to find that the issuance of the notes or the incurrence of a guarantee was a fraudulent transfer or conveyance, the court could void the payment obligations under the notes or such guarantee or

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subordinate the notes or such guarantee to presently existing and future indebtedness of ours or of the related Guarantor, or require the holders of the notes to repay any amounts received with respect to the notes or such guarantee. In the event of a finding that a fraudulent transfer or conveyance occurred, you may not receive any repayment on the notes. Sufficient funds to repay the notes may not be available from other sources, including any remaining Guarantor, if any. Further, the voidance of the notes could result in an event of default with respect to our and our subsidiaries’ other indebtedness that could result in acceleration of such indebtedness.

As a general matter, value is given for a transfer or an obligation if, in exchange for the transfer or obligation, property is transferred or a valid antecedent debt is satisfied. A court may find that we or a Guarantor did not receive reasonably equivalent value or fair consideration for the notes or such guarantee if we or such Guarantor did not substantially benefit directly or indirectly from the issuance of the notes or such guarantee. Specifically, if the guarantees were legally challenged, any guarantee could also be subject to the claim that, since the guarantee was incurred for Apergy’s benefit, and only indirectly for the benefit of the applicable Guarantor, the obligations of the applicable Guarantor were incurred for less than fair consideration. A court could thus void the obligations under the guarantees, subordinate them to the applicable Guarantor’s other indebtedness or take other action detrimental to you as a holder of the notes.

Although each guarantee entered into by a subsidiary will contain a provision intended to limit that Guarantor’s liability to the maximum amount that it could incur without causing the incurrence of obligations under its guarantee to be a fraudulent transfer, this provision may not be effective (as a legal matter or otherwise) to protect those guarantees from being voided under fraudulent transfer law, or may reduce that Guarantor’s obligation to an amount that effectively makes its guarantee worthless.

In addition, any payment by us pursuant to the notes made at a time we were found to be insolvent could be voided and required to be returned to us or to a fund for the benefit of our creditors if such payment is made to an insider within a one-year period prior to a bankruptcy filing or within 90 days for any non-insider party if such payment would give such insider or non-insider party more than such creditor would have received in a distribution under Chapter 7 of the Bankruptcy Code, and certain applicable statutory defenses did not apply.

Finally, as a court of equity, the bankruptcy court may subordinate the claims in respect of the notes to other claims against us under the principle of equitable subordination, if the court determines that: (i) the holder of notes engaged in some type of inequitable conduct; (ii) such inequitable conduct resulted in injury to our other creditors or conferred an unfair advantage upon the holder of notes; and (iii) equitable subordination is not inconsistent with the provisions of the bankruptcy code.

We may redeem your notes at our option, which may adversely affect your return.

As described under “Description of the Exchange Notes—Optional Redemption,” we have the right to redeem the notes in whole or in part beginning on May 1, 2021, at the redemption prices specified under “Description of the Exchange Notes—Optional Redemption.” At any time and from time to time prior to May 1, 2021, we may redeem some or all of the notes at a price equal to 100% of the aggregate principal amount thereof plus the make-whole premium described under “Description of the Exchange Notes—Optional Redemption,” plus accrued and unpaid interest up to, but excluding, the redemption date. At any time and from time to time prior to May 1, 2021, we may redeem up to 35% of the aggregate principal amount of the notes at a redemption price of 106.375% of the aggregate principal amount thereof, plus accrued and unpaid interest up to, but excluding, the redemption date, with the net proceeds of certain equity offerings if at least 65% of the aggregate principal amount of notes issued remains outstanding afterward and we redeem the notes within 180 days of completing the equity offering. We may choose to exercise this redemption right when prevailing interest rates are relatively low. As a result, you may not be able to reinvest the redemption proceeds in a comparable security at an effective interest rate as high as that of the notes.

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A lowering or withdrawal of the ratings assigned to our debt securities by rating agencies could cause the liquidity or market value of the notes to decline and may increase our future borrowing costs and reduce our access to capital.

Our indebtedness currently has a non-investment grade rating, and any rating assigned could be lowered or withdrawn entirely by a rating agency if, in that rating agency’s judgment, future circumstances relating to the basis of the rating, such as adverse changes, so warrant. Real or anticipated changes in our credit ratings will generally affect the market value of the notes. Credit ratings are not recommendations to purchase, hold or sell the notes. Additionally, credit ratings may not reflect the potential effect of risks relating to the structure or marketing of the notes.

Any future lowering of our ratings likely would make it more difficult or more expensive for us to obtain additional debt financing. If any credit rating initially assigned to the notes is subsequently lowered or withdrawn for any reason, you may not be able to resell your notes without a substantial discount.

If the notes are rated investment grade at any time by both Moody’s and S&P’s, most of the restrictive covenants and corresponding events of default contained in the Indenture will be terminated.

If, at any time, the credit rating on the notes, as determined by both Moody’s and S&P’s Rating Services equals or exceeds Baa3 or BBB-, respectively, or any equivalent replacement ratings, we will no longer be subject to most of the restrictive covenants and corresponding events of default contained in the Indenture. If these restrictive covenants are terminated, the obligation to grant further guarantees of the notes will be terminated, and we may incur other indebtedness, make restricted payments and take other actions that would have been prohibited if these covenants had been in effect. Accordingly, if these covenants and corresponding events of default are terminated, holders of the notes will have less credit protection than at the time the notes were issued.

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USE OF PROCEEDS

We will not receive any cash proceeds from the issuance of the exchange notes pursuant to the exchange offer. In consideration for issuing the exchange notes as contemplated in this prospectus, we will receive in exchange a like principal amount of outstanding notes, the terms of which are identical in all material respects to the exchange notes, except that the exchange notes will not contain terms with respect to transfer restrictions, registration rights and additional interest for failure to observe certain obligations in the registration rights agreement. The outstanding notes surrendered in exchange for the exchange notes will be retired and cancelled and cannot be reissued. Accordingly, the issuance of the exchange notes will not result in any change in our capitalization.

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SELECTED HISTORICAL FINANCIAL DATA

The following selected financial data reflects the combined and consolidated operations of Apergy. The selected combined income statement data for the years ended December 31, 2017, 2016, and 2015, and the selected combined balance sheet data as of December 31, 2017 and 2016, were derived from Apergy’s audited combined financial statements and accompanying notes (collectively, the “Audited Combined Financial Statements”) included elsewhere in this prospectus. The selected historical combined balance sheet data as of December 31, 2015, was derived from Apergy’s audited combined financial statements, which are not included in this prospectus. The selected historical combined financial data as of and for the years ended December 31, 2014 and 2013, and as of September 30, 2017, were derived from Apergy’s underlying financial records, which were derived from the financial records of Dover Corporation, and which are not included in this prospectus. In Apergy’s management opinion, the unaudited combined financial statements for these periods have been prepared on the same basis as the audited combined financial statements and include all adjustments, consisting only of normal recurring adjustments and allocations, necessary for a fair statement of the information for the periods presented.

The selected consolidated balance sheet data as of September 30, 2018, and the selected consolidated income statement data for the nine months ended September 30, 2018 and 2017, were derived from Apergy’s unaudited condensed consolidated financial statements and accompanying notes (collectively, the “Interim Financial Statements”), included elsewhere in this prospectus.

The selected historical financial data should be read in conjunction with the discussion in “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” the Audited Combined Financial Statements and the Interim Financial Statements.

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OUR BUSINESS AND PROPERTIES

Overview

Apergy is a leading provider of highly engineered technologies that help companies drill for and produce oil and gas safely and efficiently around the world. Our products include a full range of equipment and technologies that enable efficient drilling and safe and efficient production throughout the lifecycle of a well. Our principal products consist of artificial lift equipment and solutions, including electric submersible pump systems (“ESP”), rod pumping systems (“Rod Lift”), gas lift systems, progressive cavity pump systems (“PCP”) and plunger lift systems, as well as polycrystalline diamond cutters (“PDCs”) for drilling. We also provide a comprehensive digital product offering consisting of equipment, software and Industrial Internet of Things (“IIoT”) solutions for downhole monitoring, wellsite productivity enhancement and asset integrity management. Our expansive digital product offering includes quartz pressure transducers and hybrid electronics, artificial lift controllers and optimization software, monitoring and predictive diagnostic instruments, and software for reciprocating machinery. Our products and technologies enhance our customers’ drilling and production economics.

Apergy’s products are used by a broad spectrum of customers in the global oil and gas industry, including national oil and gas companies, large integrated and independent oil and gas companies, all of the major oilfield equipment and services providers, and pipeline companies. We compete across major oil and gas markets globally with a particular strength in the North American onshore market. Our products are particularly well suited for unconventional/shale oil and gas markets. While our products are used in both the oil and gas markets, over 75% of our revenues come from oil markets.

The quality, innovative technology and performance of our technologies drive improved cost-effectiveness, productivity, efficiency and safety for our customers. We believe our strong market share in our core markets and our long-term customer relationships are due to our focus on technological advancement, product reliability and our commitment to superior customer service across the organization. Our long-term customer relationships and the consumable nature of many of our products also enable us to benefit from recurring revenues throughout the lifecycle of a producing well. We believe we are also differentiated from competitors through our proven business model focused on high customer intimacy, innovative technology and application engineering.

History and Development

Apergy was formerly a part of the Energy segment within Dover, a global, diversified industrial manufacturer. Apergy has a long history of innovation across these businesses and our heritage in the oil field equipment industry extends over 60 years. During this time, Apergy has expanded through a series of strategic acquisitions of well-known businesses and brands as well as internal growth initiatives. Key acquisitions that built our artificial lift platform include Harbison-Fischer, Accelerated, Wellmark, PCS Ferguson (f/k/a Production Controls Services, Inc.) and Oil Lift Technology. Our leading PDC business was created through the acquisition of US Synthetic. Over this time, Apergy has developed experience as an effective operator as well as a successful integrator of businesses.

Our Industry

We principally operate in the oil and gas drilling and production industry and provide a broad range of technologies and products that enhance oilfield efficiency, improve productivity, maximize reserve recovery and increase asset value. Demand for our products is impacted by overall global demand for oil and gas, which is expected to benefit from a variety of long-term fundamental trends.

According to the U.S. Energy Information Administration’s (the “EIA”) International Energy Outlook 2017 (the “EIA International Energy Outlook”), global economic expansion, coupled with a growing population, will help drive up global energy consumption by about 41% by the year 2050. The majority of this growth is forecasted

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to come from China, India and other Asian nations. Increasing urbanization and a significant expansion of the middle class globally are expected to contribute to higher personal and commercial transportation needs, rising electricity in homes and greater industrial energy demand. For these reasons, the EIA International Energy Outlook projects that demand for petroleum and other liquid fuels will grow by 28% from 2015 through 2050, while demand for natural gas will increase by 69% and natural gas will overtake coal as the world’s second largest fuel source during this period.

As new technology has unlocked resources previously considered too costly to produce, unconventional oil and natural gas reservoirs, particularly in the U.S., have become a larger part of the global energy supply landscape. Technological developments in horizontal drilling and hydraulic fracturing have enabled exploration and production (“E&P”) companies to access the vast hydrocarbon reserves contained in the unconventional oil and natural gas reservoirs of the U.S. In addition, North America is expected to become the largest liquefied natural gas (“LNG”) exporter due to growing demand for LNG from Asia and Europe. As a result, the U.S., an oil importer for decades, is on pace to become a net exporter of oil in the near-term.

The oil and gas industry has traditionally been volatile and is influenced by long-term, short-term and cyclical trends, including oil and gas supply and demand, current and projected oil and gas prices, and the level of upstream spending by E&P companies. As a result, demand for our technologies and products depends primarily upon the level of expenditures by our customers in the oil and natural gas industry, particularly those within the U.S. A rapid increase in supply over a seven year period from 2008 to 2015 contributed to a decline in oil and gas prices and reduced customer spending levels from year-end 2014 through 2016. Oil prices rebounded meaningfully in 2017 and have been relatively stable year to date in 2018, resulting in an increase in our customers’ spending and demand for Apergy’s technologies and products in both 2017 and year to date 2018. Although there remains a risk that oil prices and activity levels could deteriorate from current levels, we believe that the outlook for our businesses over the long-term is favorable. Increasing global demand for oil and gas as well as continued depletion of existing reservoirs will drive continued investment in the drilling and completion of new wells. In addition, productivity and efficiency are becoming increasingly important in the oil and gas industry as operators focus on improving per-well economics, driven by a flattening of the West Texas Intermediate crude oil (“WTI”) forward price curve, and the North American onshore oil and gas industry moving from an exploration phase into a more mature production phase.

Technology has become increasingly critical to oil and natural gas producers as a result of the maturity of the world’s oil and natural gas reservoirs, the acceleration of production decline, the focus on complex well designs and the oil and gas industry’s aging workforce. While the aggregate number of wells drilled per year has fluctuated relative to market conditions, E&P companies, on a proportional basis, have increased expenditures on technology in an effort to improve reservoir performance, increase oil and gas recovery and lower the cost per barrel produced over the life of a well. Our customers continue to seek, test and use production-enabling technologies at an increasing rate. We have invested substantially in building our technology offerings, which help us to provide more efficient tools and solutions to produce oil and natural gas. Apergy’s portfolio of data collection, controllers, and remote monitoring solutions are intended to improve reliability and drive down costs. We believe our efficiency enhancing products contribute to a reduction in the breakeven cost of unconventional development for our E&P customers. We believe our business will benefit as operators increasingly focus on optimizing production and improving per-well economics.

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Business Segments

Our business is organized into two reportable segments: Production & Automation Technologies; and Drilling Technologies.

Production & Automation Technologies

Our Production & Automation Technologies segment generated revenues of $781.9 million in 2017, representing 77% of our total 2017 revenues. Production & Automation Technologies facilitates the efficient, safe and cost effective extraction of oil and gas. We design, manufacture, market and service a full range of artificial lift equipment, end-to-end automation and digital solutions, as well as other production equipment. A portion of Production & Automation Technologies revenue is derived from activity-based consumable products, as customers routinely replace items such as sucker rods, plunger lifts and pump parts. We believe that the combination of our artificial lift equipment and our end-to-end proprietary automation solutions helps oil and gas operators lower production costs and optimize well efficiency by enabling oil and gas operators to monitor, predict and optimize performance. Our products are sold under a collection of premier brands, which we believe are recognized by customers as leaders in their market spaces, including Harbison-Fischer, Norris, Alberta Oil Tool, Oil Lift Technology, PCS Ferguson, Pro-Rod, Upco, Accelerated, Norriseal-Wellmark, Quartzdyne, Spirit, Theta, Timberline and Windrock.

Within our Production & Automation Technologies segment, we offer artificial lift products, digital products and other production equipment.

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Artificial Lift

We believe artificial lift equipment is mission-critical to oil and gas operators as a means to increase pressure within the reservoir and improve oil and gas production. Artificial lift is a key technology for increasing oil and gas production throughout the lifecycle of a producing well and is therefore directly linked to operator economics. Apergy offers a full suite of artificial lift solutions to meet the varying needs of operators as oil production volume levels decline over the lifecycle of a producing well, as demonstrated in the figure below. Apergy’s comprehensive offering provides our customers with cost effective solutions tailored to a well’s specific characteristics and production volumes. Apergy is particularly strong within key U.S. basins where artificial lift technologies are prevalent. According to Spears, the U.S. is the world’s largest lift market, followed by Canada, and artificial lift technologies are used in approximately 95% of all producing wells in North America. We believe that our offerings also have significant international potential, as production rates continue to decline in existing wells in regions such as the Middle East, South America and Eastern Europe. Our artificial lift products represented approximately 77% of our Production & Automation Technologies segment revenues in 2017.

Key artificial lift products include:

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Digital

Our proprietary digital products are aimed at creating an end-to-end production optimization platform that enables oil and gas operators to monitor, predict and optimize well performance and drive improved return on investment during the production process. Apergy is a leading provider of productivity tools and performance management software for artificial lift and asset integrity management. Our software has modular architecture that enables specific solutions to be tailored to meet exact customer needs. Real-time data is used by our customers to drive decisions, enhance well servicing and obtain an accurate picture of the well’s functioning over time, resulting in a more connected, digital wellsite that not only operates more efficiently but is also safer and more secure. Our digital products represented approximately 10% of our Production & Automation Technologies segment revenues in 2017.

Digital solutions touch multiple parts of the wellsite and allow an operator centralized monitoring and control. Smart instrumentation and hardware at the wellsite have sensing capabilities that allow the capture of data. Once captured, that data is communicated to a cloud based IIoT infrastructure platform where it can be analyzed and used to drive insights for customers. We believe that the combination of Apergy’s digital products and its strong artificial lift presence enables Apergy to drive the continued adoption of digital solutions by its

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customers. Apergy sees digital adoption as a key secular trend in the oil and gas industry, particularly in the current lower oil price environment where operators are focused on lowering the cost per barrel produced over the lifecycle of a well.

Digital solutions bring together multiple layers of equipment, sensors and software. A site may employ a full-scale solution (e.g., a fully connected wellsite using Apergy equipment and software) or a more application specific solution (e.g., a controller used for diagnostics on an ESP lift). Technologies included in Apergy’s digital products offering include:

Other Production Equipment

Apergy also offers other production equipment including chemical injection systems, flow control valves, oil and water separation, gas conditioning, process heating and pressure vessel products. These products are complementary to our artificial lift and automation technologies offerings and are used by customers in the production of oil and gas. Apergy’s other production equipment allows Apergy to build its share of customers’ wallets and enhances our ability to cross-sell products across the production equipment portfolio. Our other production equipment offerings represented approximately 13% of our Production & Automation Technologies segment revenues in 2017.

As of December 31, 2017, our Production & Automation Technologies segment operated 18 manufacturing facilities in North America, Australia, Colombia and Oman, as well as 105 sales and service facilities in North America.

Drilling Technologies

Our Drilling Technologies segment generated revenues of $227.7 million in 2017, representing 23% of our total 2017 revenues. In operation for over 30 years, Drilling Technologies provides highly specialized products used in drilling oil and gas wells. We design, manufacture and market PDCs for use in oil and gas drill bits under the US Synthetic brand. Our proprietary PDCs are based on years of innovation and intellectual property development in material science applications including the production of highly stable synthetic diamonds, known as “polycrystalline diamonds.” US Synthetic has historically filed new patents at a rate of over 50 patents per year and has previously received the prestigious Shingo Prize for operational excellence. We believe our highly engineered PDCs are distinguished by their quality, rate of penetration and longevity. PDCs are a relatively small cost to the oil and gas operator in the context of overall drilling costs, but are critical to successful drilling. As a result, we believe our customers value the quality and performance of US Synthetic PDCs over less expensive alternatives because a lower quality PDC can cause unnecessary and expensive drilling delays. Over 95% of our PDCs are custom designed to meet unique customer requirements and are finished to exact customer specification to ensure optimal performance. PDCs are utilized in both vertical and horizontal drilling and need to be replaced as they wear out during the drilling process.

Key products of our Drilling Technologies segment include:

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As of December 31, 2017, our Drilling Technologies segment operated two facilities, which are located in North America.

The following graphic illustrates where the key products of our Production & Automation Technologies and Drilling Technologies segments are used at a wellsite.

Apergy’s Strengths

We believe that the following strengths position us well to achieve our primary business objective of creating value for all of our stakeholders, including our customers, employees and stockholders:

Attractive businesses benefiting from favorable industry trends in oil and gas.

We believe that increasing global demand for oil and gas and steady depletion of existing reservoirs will continue to drive investment in the drilling and completion of new wells, despite the current oversupply. The EIA International Energy Outlook forecasts that global tight gas, shale gas and coalbed methane production will grow by 3.6% per annum through 2050, driven primarily by demand in the U.S. Additionally, the EIA International Energy Outlook projects that global tight oil production will more than double between 2015 and 2040, growing from 5.0 Mmb/d in 2015 to 10.3 Mmb/d in 2040. At the same time, we believe the current oil price environment supports increased investment to maximize productivity from existing oil fields and increase the efficiency of oilfield operations. We believe operators’ continued focus on improving per-well economics, driven by a flattening of the WTI forward price curve, and the North American onshore oil and gas industry moving from an exploration phase into a more mature production phase, will increase demand for our artificial lift and wellsite automation solutions.

Substantial presence in growing basins, segments and regions.

For the year ended December 31, 2017, 84% of our revenue was generated in North America, where the onshore rig activity was the highest growth region in the oil and gas industry in 2017, achieving a 70% year-over-year increase. Onshore unconventional oil and gas production is expected to continue to grow in North America through 2050, according to the EIA Annual Outlook. Apergy has established positions in key

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North American unconventional basins, such as the Permian, Eagle Ford and Bakken basins, that are expected to experience continued growth in the coming years. We have also been expanding our presence in key international markets, including the Middle East, Latin America and Australia.

Significant recurring revenue enhances the stability of our results.

Historically, approximately 40% of our revenue is recurring. This includes replacement hardware, such as rod pumps and sucker rods, which replace previously deployed equipment in established producing wells. It also includes equipment service revenue, as well as ongoing revenue connected with our automation offering, particularly subscription-based revenue for automated well monitoring and management. We believe this recurring revenue enhances the predictability and stability of our revenue and cash flow, and helps to mitigate the impact of down market cycles.

Proven business model driving strong relative performance across market cycles.

We have built our business through differentiated technology and application engineering, high customer intimacy and superior customer service, continuous new product innovation and a culture of continuous improvement. We have also focused on delivering products and solutions that are non-commoditized and that we believe are critical to an oil or gas producer’s efficiency and profitability. Through this consistent approach, we have achieved strong relative operating results across market cycles, especially during down cycles, demonstrating the resilience of our business model. Despite the recent oil and gas market downturn, we achieved significant net cash provided by operating activities during 2015 and 2016, in part through proactive working capital management.

Industry leadership with strong brand portfolio and reputation for quality, performance and service.

Our products are sold under a collection of premier brands with strong reputations for quality, performance and service in the industry. These brands include Norris, Harbison-Fischer, Accelerated, PCS Ferguson, Oil Lift Technology, Norriseal-Wellmark, Spirit, Quartzdyne, Theta, Windrock and US Synthetic. Our heritage in the oil field equipment industry extends over 60 years. We believe the quality of our brands has enabled us to achieve a strong Net Promoter Score, which we believe is among the highest in the artificial lift market.

Comprehensive artificial lift portfolio in an attractive market segment.

Artificial lift is one of the fastest growing segments in oilfield equipment, as spending for artificial lift per well has outpaced other areas of growth. According to Spears, the global artificial lift market was approximately $8.3 billion in 2016 and grew approximately 6% in 2017. During the previous oil and gas upcycle from 2009 to 2014, the artificial lift market grew at an average annual rate of approximately 19%, according to Spears. Additionally, according to Spears, artificial lift spending per active rig has grown at an average annual rate of almost 8% between 2006 and 2017. We believe we are well positioned to benefit from this favorable trend with a broad portfolio of artificial lift solutions to drive productivity throughout the lifecycle of the well, including ESP, Rod Lift, PCP, plunger lift, hydraulic and jet lift systems.

Our automation business is well positioned to capitalize on increasing adoption of digital applications by our customers.

As our customers increasingly focus on maximizing the productivity and efficiency of existing wells, we believe they will continue to adopt automation technologies at the wellsite and that our business is well positioned to capitalize on this trend. We believe technology has become increasingly important to the oil and natural gas marketplace as a result of the maturity of the world’s oil and natural gas reservoirs, the acceleration of production decline, the focus on complex well designs and the oil and gas industry’s aging workforce. In the current lower oil price environment, our customers are focused on lowering the cost per barrel produced over the

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lifecycle of a well and have begun to seek, test and use production-enabling technologies at an increasing rate. We believe that our strong domain expertise, customer access and innovative hardware and proprietary optimization software offer advantages in this regard.

We are an award-winning global leader in PDCs for oil and gas drilling and an important partner to customers in achieving drilling productivity.

Our US Synthetic business has over thirty years of experience in the development and production of PDCs and has achieved a strong leadership position in the industry primarily due to our expertise in diamond science technology and our ongoing commitment to innovation, quality and superior customer service. We custom design PDCs to the specific characteristics of the unique geological formations in which our customers are drilling. We are able to analyze the needs of our customers and deliver customized solutions in a reliable and timely manner, enabling our customers to operate more efficiently and reduce their total drilling costs. US Synthetic is a recognized leader in lean manufacturing and engineering. Currently, US Synthetic remains the only upstream oilfield equipment company to receive the Shingo Prize for operational excellence.

Strong operating system that delivers sustainable performance.

We utilize an operating system that we believe distinguishes us from our peers. Our operating system is built on a foundation of a strong continuous improvement program that drives relentless focus on business process improvements and eliminating waste. Key focus areas of our operating system include strategic planning, organic growth, pricing, productivity, strategic sourcing and talent management. Our operating system has enabled us to deliver attractive margin and cash flow performance. We also believe this operating system allows us to integrate new businesses effectively and deliver value.

Executive management team with proven track record of success.

Our senior management team is led by Sivasankaran (“Soma”) Somasundaram, who serves as our President and Chief Executive Officer. Other members of Apergy’s senior management team include Jay A. Nutt, Senior Vice President and Chief Financial Officer, Paul E. Mahoney, President, Production and Automation Technologies, Robert K. Galloway, President, Drilling Technologies, Syed (“Ali”) Raza, Senior Vice President and Chief Digital Officer and Shankar Annamalai, Senior Vice President Operations. Our senior management team consists of proven industry operators, with an average of 24 years of relevant experience. We believe our senior leadership team has the extensive operational, financial and managerial experience needed to effectively navigate the key opportunities and challenges facing our business today and have been responsible for developing and executing our success to date. For more information regarding the executive officers of Apergy, see “Directors, Executive Officers and Corporate Governance—Executive Officers.”

Apergy’s Strategies

Our goal is to continue to create value and to become the leader at the wellsite, driving customer productivity and efficiency. We intend to achieve this goal by executing the following strategies:

Expand market coverage and increase market share in growing unconventional basins.

Onshore unconventional oil and gas production is expected to continue to grow in North America. The EIA International Energy Outlook projects global tight gas, shale gas and coalbed methane production to grow by 3.6% per annum through 2050, driven primarily by the U.S. According to the EIA Annual Outlook, shale output in the U.S. is expected to increase by approximately 130% over this period, while U.S. tight oil output will grow by approximately 74%. As a result, North America is projected to become a major exporter of natural gas during this period. Apergy has established positions with customers that operate in key North American unconventional basins, such as the Permian, Eagle Ford and Bakken basins, that are expected to experience continued growth in

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the coming years. We intend to expand our market coverage and increase our share in these markets by leveraging our existing customer relationships, sales and service infrastructure and new product initiatives. Key elements of the strategy will include expanding sales coverage, key account management to drive cross selling, targeted product launches to capture market share, data analytics to drive increased customer penetration opportunities and educational programs to drive awareness of our technology differentiation.

Capitalize on increasing customer adoption of automation solutions to drive wellsite productivity.

We believe our customers will increasingly adopt automation solutions to drive productivity and efficiency in the coming years. Technology has become increasingly critical to the oil and natural gas marketplace as a result of the maturity of the world’s oil and natural gas reservoirs, the acceleration of production decline, the focus on complex well designs and the oil and gas industry’s aging workforce. While the aggregate number of wells being drilled per year has fluctuated relative to market conditions, E&P companies have increased expenditures on technology in an effort to improve reservoir performance, increase oil and gas recovery and to lower the cost per barrel produced over the life of a well. Customers continue to seek, test and use production-enabling technologies at an increasing rate. We have invested a substantial amount of our time and resources into building our technology offerings, which help us to provide our customers with more efficient tools to produce oil and natural gas. Apergy’s proprietary automation solutions improve reliability and drive down costs. We offer a full range of automation solutions consisting of equipment, software and full end-to-end IIoT solutions to meet specific customer needs. We believe our automation solutions contribute to a reduction in the breakeven cost of unconventional development, improving the efficient use of capital and operating budgets of our E&P customers. We believe our business will benefit as operators increasingly focus on optimizing production and improving per-well economics. We intend to leverage our extensive customer access and deep domain expertise in these applications to capitalize on this growth trend.

Continue to innovate and expand our product offerings.

We intend to continue our strong track record of developing and launching new and innovative products that drive improved cost-effectiveness, productivity, efficiency and safety for our customers. We operate in a market that is characterized by rapidly changing technology and frequent new product introductions. As a result, we maintain an active research, development and engineering program with a focus on solving customer challenges and developing innovative technologies to improve customer efficiency and profitability. We believe maintaining a robust innovation pipeline will allow us to continue to win market share and increase our penetration in key markets and with key customers. In the near-term, we expect to launch several new products that will help our customers gain efficiency, reduce operating costs and improve safety. Key focus areas for innovation and new product launches include increasing the performance of our artificial lift systems, developing new digital platforms for our production management and asset integrity management solutions, increasing the drilling productivity of our PDC cutters and developing diamond bearings for new applications.

Continue to expand our global reach.

As producing wells in the Middle East continue to age and deplete and shale-based production continues to expand in areas like South America, our globally recognized brands, market ready products and application knowledge offer the opportunity for international market penetration and growth. We believe there will be a substantial opportunity in the coming years to leverage our technologies currently used in unconventional oil and gas production in North America in targeted international markets. To capitalize on these opportunities, we are focused on expanding our operations and capabilities in targeted global markets such as the Middle East, Latin America and Australia, regions which we believe have aging wells and significant unconventional resource development potential. For example, we recently completed an acquisition in Argentina that will give us access to the market and enable us to capitalize on shale developments in that country. We have begun to win tenders in these markets, and we expect to continue to build on these successes in the future, especially as these international markets move towards adopting artificial lift and automation technologies.

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Continue to drive margin expansion and cash from operations through operational excellence.

We remain focused on driving margin expansion and cash from operations as the oil and gas markets continue to recover. We have a demonstrated track record of strong relative performance through market cycles, including maintaining cash from operations positive throughout the recent oil and gas downturn. We are committed to continuing operational excellence and driving strong performance by utilizing our differentiated operating system. We plan to achieve this through a rigorous focus on improving productivity in our facilities, reducing material costs by strategic sourcing in best value countries, reducing working capital through effective inventory, receivables and payables management and eliminating waste in our processes through lean and continuous improvement principles.

Expand our technology and product portfolio through selective acquisitions.

In addition to our organic growth initiatives, we may choose to pursue select strategic acquisition opportunities as part of our growth strategy. We benefit from a track record of successfully growing our earnings and technology offering through selective acquisitions. For example, over the last cycle, we expanded our comprehensive artificial lift platform through several acquisitions, including Harbison-Fischer, Oil Lift Technology, PCS Ferguson, and Accelerated. Most recently, we completed the acquisition of an Argentina-based supplier of progressive cavity pump products and services in October of 2017. We have historically employed a disciplined approach to acquisitions focused on opportunities where we believe we can achieve an attractive return on our investment. These have included opportunities that (i) increased our exposure to the most important growth trends in the industry, (ii) added key products and technologies, (iii) enhanced our market position, (iv) expanded our geographic scope and/or (v) provided the opportunity to realize synergies while strengthening our capabilities. To the extent we choose to pursue acquisition opportunities, as part of our disciplined approach, we intend to focus on those that we believe will be accretive to earnings while consistent with our goal to maintain a strong and flexible balance sheet and healthy credit profile. In order to preserve the tax-free nature of the spin-off, we must execute any such transactions in compliance with the tax matters agreement. As a result, the ability of Apergy to engage in, among other things, certain mergers and equity transactions could be limited or restricted for a two-year period following the spin-off. See “Risk Factors—Risks Related to the Separation—Apergy may not be able to engage in certain corporate transactions as a result of the Separation.”

Competition

The markets in which we operate are highly competitive. The principal bases of competition in our markets are customer service, product quality and performance, price, breadth of product offering, market expertise and innovation. We believe we differentiate ourselves from our competitors through our model of high customer intimacy, differentiated technology, innovation and a high level of customer service.

We face competition from other manufacturers and suppliers of oil and gas production and drilling equipment. Key competitors include Weatherford International plc, Baker Hughes, a GE Company, Halliburton, BORETS, Tenaris, Novomet and Emerson in Production and Automation Technologies; as well as DeBeers (Element 6), Schlumberger Ltd. (Mega Diamond) and various Chinese suppliers in Drilling Technologies.

Customers, Sales and Distribution

We have built our business through high customer intimacy and superior customer service, and we view intense customer focus as being central to our goal of creating value for all of our stakeholders. Drawing on our deep industry and application engineering expertise, we strive to develop close, collaborative relationships with our customers. We work closely with our customers’ engineering teams to develop technologies and applications that help improve efficiency and productivity.

We have established deep and long-standing customer relationships with some of the largest operators in the oil and gas drilling and production markets. Our customers include national oil and gas companies, large and

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integrated independent oil and gas companies, all of the major oil field equipment and service providers, and pipeline companies.

We market and sell our products and technologies through a combination of sales representatives, technical seminars, trade shows and print advertising. We sell directly to customers through our direct sales force and indirectly through independent distributors and sales representatives. Our direct sales force is composed of highly trained industry experts who can advise our customers on the advantages of our technology and product offering. We have also developed an extensive network of 108 sales and service locations throughout key regions and basins in North America to better serve our customers. We also host forums and training sessions, such as our Artificial Lift Academy, where our customers can share their experiences and we can educate and train our customers in the use of our new technologies. Nearly all of our Drilling Technologies sales and over 70% of our Production & Automation Technologies sales in 2017 were sold directly to the end-use customer.

In addition to our direct sales force, we support a global network of distributors and representatives. We provide our distributors with sales and product literature, advertising and sales promotions, and technical assistance and training with our products. Many of our distributors also stock our products.

Our customer base is diverse and no single customer accounted for more than 10% of total revenue for the year ended December 31, 2017.

Intellectual Property

Apergy owns many patents, trademarks, licenses and other forms of intellectual property, which have been acquired over a number of years and, to the extent relevant, expire at various times over a number of years. A large portion of Apergy’s intellectual property consists of patents, unpatented technology and proprietary information constituting trade secrets that Apergy seeks to protect in various ways, including confidentiality agreements with employees and suppliers where appropriate. While Apergy’s intellectual property is important to its success, the loss or expiration of any of these rights, or any group of related rights, is not likely to materially affect Apergy’s results on a combined basis. Apergy believes that its commitment to continuous engineering improvements, new product development and improved manufacturing techniques, as well as strong sales, marketing and service efforts, are significant to its general leadership positions in the niche markets that it serves.

Research and Development and Engineering

Apergy operates in markets that are characterized by changing technology and frequent new product introductions. As a result, Apergy’s success is dependent on its ability to develop and introduce new technologies and products for its customers. Apergy maintains an active research, development and engineering program with a focus on developing innovative products and solutions as well as upgrading and improving existing offerings to satisfy the changing needs of its customers, expand revenue opportunities domestically and internationally, maintain or extend competitive advantages, improve product reliability and reduce production costs. Apergy believes maintaining a robust innovation pipeline will allow it to continue to win market share and increase its penetration in key markets and with key customers.

Raw Materials

Apergy uses a wide variety of raw materials, primarily metals and semi-processed or finished components. We have not historically experienced material impacts to our financial results due to shortages or the loss of any single supplier. Although the required raw materials are generally available, commodity pricing for metals, such as nickel, chrome, molybdenum, vanadium, manganese and steel scrap, fluctuate with the market. Although cost increases in commodities may be recovered through increased prices to customers, Apergy’s operating results are exposed to such fluctuations. Apergy attempts to control such costs through short-duration fixed-price contracts with suppliers and various other programs, such as Apergy’s global supply chain activities. In addition, Apergy sources material globally. This global supply chain is intended to provide Apergy with a cost-effective solution

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for raw materials. Our supply chain could be exposed to logistical disruptions. Apergy maintains domestic suppliers in most cases to provide temporary contingencies. Despite contingencies and back-up processes, sustained inflation and unpredictable disruptions to supply could have an adverse impact on our business.

Regulation and Environmental and Occupational Health and Safety Matters

Apergy’s operations are subject to a variety of international, national, state and local laws and regulations, including those relating to the discharge of materials into the environment, health and worker safety, or otherwise relating to human health and environmental protection. Failure to comply with these laws or regulations may result in the assessment of administrative, civil and criminal penalties, imposition of remedial or corrective action requirements, and the imposition of injunctions to prohibit certain activities or force future compliance.

In addition, Apergy depends on the demand for its products and services from the oil and gas industry and, therefore, is affected by changing taxes, price controls, tariffs and trade restrictions and other laws and regulations relating to the oil and gas industry in general, including those specifically directed to hydraulic fracturing and onshore products. The adoption of laws and regulations curtailing exploration, drilling or production in the oil and gas industry, or the imposition of more stringent enforcement of existing regulations, could adversely affect Apergy’s operations by limiting demand for Apergy’s products and services or restricting Apergy’s or its customers operations. For more information, see “Risk Factors—Risks Related to Apergy’s Business—Federal, state and local legislative and regulatory initiatives relating to hydraulic fracturing and the potential for related litigation could result in increased costs and additional operating restrictions or delays for Apergy’s customers, which could reduce demand for Apergy’s products and negatively impact Apergy’s business, financial condition and results of operations,” “—Apergy and its customers are subject to extensive environmental and health and safety laws and regulations that may increase Apergy’s costs, limit the demand for Apergy’s products and services or restrict Apergy’s operations. In addition, future regulations, or more stringent enforcement of existing regulations, could increase those costs and liabilities, which could adversely affect Apergy’s results of operations” and “—Climate change legislation and regulatory initiatives could result in increased compliance costs for Apergy and its customers.”

Apergy utilizes behavioral-based safety practices to promote a safe working environment for all its employees. On a consistent and regular basis, safety is discussed, measured and promoted in all levels of the organization. Additionally, Apergy’s operations are subject to a number of federal and state laws and regulations relating to workplace safety and worker health, such as the Occupational Safety and Health Act and regulations promulgated thereunder.

Apergy has incurred and will continue to incur operating and capital expenditures to comply with environmental, health and safety laws and regulations. Historically, there have been no material effects upon Apergy’s earnings and competitive position resulting from Apergy’s compliance with such laws or regulations; however, there can be no assurance that such costs will not be material in the future or that such future compliance will not have a material adverse effect on our business or operational costs.

Employees

Apergy employed approximately 3,200 persons in nine countries as of September 30, 2018. Approximately 100 of Apergy’s employees in the U.S. are subject to a collective bargaining agreement. Outside the U.S., some of Apergy’s employees are represented by unions or works councils. Apergy believes that it has good relations with its employees.

Properties

Apergy’s corporate headquarters is located in The Woodlands, Texas. Apergy maintains technical customer support offices and operating facilities in North America, the Middle East, Latin America and Australia.

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The number, type, location and size of the properties used by Apergy’s continuing operations as of December 31, 2017 are shown in the following charts, by segment:

Apergy believes that its owned and leased facilities are well-maintained and suitable for its operations.

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LEGAL PROCEEDINGS

Apergy and certain of its subsidiaries are parties to a number of legal proceedings incidental to their businesses. These proceedings primarily involve claims by private parties alleging injury arising out of use of Apergy’s products, intellectual property infringement, employment matters and commercial disputes. Management and legal counsel, at least quarterly, review the probable outcome of such proceedings, the costs and expenses reasonably expected to be incurred and currently accrued to-date. Apergy has reserves for legal matters that are probable and estimable, and at September 30, 2018 and December 31, 2017, 2016 and 2015, respectively, these reserves were not significant. While it is not possible at this time to predict the outcome of these legal actions, in the opinion of management, based on the aforementioned reviews, Apergy is not currently involved in any legal proceedings which, individually or in the aggregate, could have a material effect on its financial position, results of operations, or cash flows.

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF

FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) is our analysis of our financial performance, financial condition and significant trends that may affect our future performance. It should be read in conjunction with the Audited Combined Financial Statements and Interim Financial Statements, each included elsewhere in this prospectus. It contains forward-looking statements including, without limitation, statements relating to Apergy’s plans, strategies, objectives, expectations and intentions that are made pursuant to the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are often identified by the words “believe,” “anticipate,” “expect,” “may,” “intend,” “foresee,” “guidance,” “estimate,” “potential,” “outlook,” “plan,” “should,” “will,” “would,” “could,” “target,” “forecast” and similar expressions, including the negative thereof. We do not undertake to update, revise or correct any of the forward-looking information unless required to do so under the federal securities laws. Readers are cautioned that such forward-looking statements should be read in conjunction with the disclosures under the heading: “Cautionary Statement Concerning Forward-Looking Statements.”

Executive Overview and Business Outlook

Apergy is a leading provider of highly engineered equipment and technologies that help companies drill for and produce oil and gas safely and efficiently around the world. Our products provide efficient functioning throughout the lifecycle of a well—from drilling to completion to production.

Separation and Distribution

On April 18, 2018, the Dover Board of Directors approved the separation of entities conducting its upstream oil and gas energy business within the Dover Energy segment into an independent, publicly traded company named Apergy Corporation. In accordance with the separation and distribution agreement, the two companies were separated by Dover distributing to its stockholders all 77,339,828 shares of Apergy common stock on May 9, 2018. Each Dover stockholder received one share of Apergy common stock for every two shares of Dover common stock held at the close of business on the record date of April 30, 2018. In conjunction with the Separation, Dover received a private letter ruling from the IRS to the effect that, based on certain facts, assumptions, representations and undertakings set forth in the ruling, for U.S. federal income tax purposes, the distribution of Apergy common stock was not taxable to Dover or U.S. holders of Dover common stock, except in respect to cash received in lieu of fractional share interests. Following the Separation, Dover retained no ownership interest in Apergy, and each company now has separate public ownership, boards of directors and management. On May 9, 2018, Apergy common stock began “regular-way” trading on the New York Stock Exchange under the “APY” symbol.

Basis of Presentation

See Note 1—“Basis of Presentation” in the Audited Combined Financial Statements and Note 1—“Basis of Presentation and Separation” in the Interim Financial Statements for information on the basis of presentation of the Audited Combined Financial Statements and Interim Financial Statements included in this prospectus.

Business Environment

Our business provides a broad range of technologies and products for the oil and gas drilling and production industry and, as a result, is substantially dependent upon activity levels in the oil and gas industry. Demand for our products is impacted by overall global demand for oil and gas, ongoing depletion rates of existing wells which produce oil and gas, and our customers’ willingness to invest in the development and production of oil and gas resources. Our customers determine their operating and capital budgets based primarily on current and future

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crude oil and natural gas prices, U.S. and worldwide rig count and U.S. well completions. Crude oil and natural gas prices are impacted by geopolitical, macroeconomic and local events and have historically been subject to substantial volatility and cyclicality. Future higher oil and gas prices typically translate into higher exploration and production budgets. Rig count, footage drilled and exploration and production investment by oil and gas operators have often been used as leading indicators for the level of drilling and development activity in the oil and gas sector.

Market Conditions and Outlook

Oil supply markets tightened in the back half of 2017 and throughout the first half of 2018, driving 2018 average WTI crude prices higher. Although certain OPEC and non-OPEC producers announced their intention to increase production beginning in the third quarter of 2018, the crude oil price outlook remained relatively stable driven by expectations that these announced production increases would not offset falling production levels in Venezuela and Iran, given the anticipated declines in Iranian production as a result of the reinstatement of U.S. sanctions during late 2018. U.S., Canadian and worldwide rig counts increased sequentially in the third quarter of 2018. We expect continued growth in rig count, as well as footage drilled, as the demand for oil and gas continues to grow and commodity prices remain constructive. We expect that U.S. rig count growth will be more modest through the end of 2018 due to takeaway capacity constraints in the Permian basin and as oil and gas operators experience budgeting pressures as year-end approaches.

Recently announced tariffs by the U.S. government, and retaliatory tariffs and other trade restrictions by others, introduce uncertainty to our business since some of our products are impacted by the tariffs. We expect these products to experience higher input costs; however, we expect to be able to mitigate some of the impacts of higher costs through various measures, including price increases, supplier concessions and productivity improvement initiatives. In addition, we remain ready to respond to any changes in our customers’ plans based on the recent takeaway capacity issues in the Permian basin. Although we have not experienced any material impact to our business to date from slower Permian activity, we believe U.S. producers will redirect their capital to other basins which we currently serve.

Although risk remains that oil prices and activity levels could deteriorate from current levels, we believe the long-term outlook for our businesses is favorable. Increasing global demand for oil and gas, in combination with ongoing depletion of existing reservoirs, is expected to drive continued investment in the drilling and completion of new wells. In addition, productivity and efficiency are becoming increasingly important in the oil and gas industry as operators focus on improving per-well economics.

Average oil and gas prices, rig counts and well completions are summarized below:

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Components of our Results of Operations

Revenues—Our revenues are generated substantially from product sales, which approximated 89% and 91% of our revenues for the nine months ended September 30, 2018 and 2017, respectively, and 91%, 90% and 92% of our revenues for the years ended December 31, 2017, 2016 and 2015, respectively. The remaining revenue is derived from services and leases, which represented less than 8% and 5%, respectively, in all such periods. Product revenues are derived from the sale of drilling and production equipment. Service revenues are earned as we provide technical advisory assistance and field services related to our products. Lease revenue is derived from rental income of leased production equipment. Most of our operations are in the U.S. with approximately 79% and 76% of our sales derived domestically in the nine months ended September 30, 2018 and 2017, respectively, and 76%, 74% and 75% of our sales derived domestically in the years ended December 31, 2017, 2016 and 2015, respectively. International operations are spread across Canada, Europe, Australia, the Middle East, Asia-Pacific and South America. Foreign sales approximated 21% and 24% of our total revenues in the nine months ended September 30, 2018 and 2017, respectively, and 24%, 26% and 25% of our total revenues in the years ended December 31, 2017, 2016 and 2015, respectively.

Cost of goods and services—The principal elements of cost of goods and services are labor, raw materials and manufacturing overhead. Cost of goods and services as a percentage of revenues is influenced by the product mix sold in any particular period, the over or under absorption of manufacturing overhead and market conditions. Our costs related to our foreign operations do not significantly differ from our domestic costs.

Selling, general and administrative expense—Selling, general and administrative expense includes the costs associated with sales and marketing, general corporate overhead, business development expenses, compensation expense, stock-based compensation expense, legal expenses and expenses from other related administrative functions. Selling, general and administrative expense also includes allocations of costs that were incurred by Dover for functions such as corporate executive management, human resources, information technology, facilities, tax, shared services, finance and legal, including the costs of salaries, benefits and other related costs. These expenses have been allocated to Apergy based on direct usage or benefit where identifiable, with the remainder allocated on the basis of revenues, headcount, or other measures.

Other expense, net—Other expense, net primarily includes royalty expense and foreign currency gains and losses. Royalty expense is payable to Dover for our use of patents and intangible assets owned by Dover. The royalty is charged based upon Apergy revenues. Patents and intangibles owned by Dover related to Apergy transferred to Apergy upon the Separation. Following the Separation, no further royalty charges are expected to be incurred by Apergy from Dover. Foreign currency gains and losses includes re-measurement and settlement of foreign currency denominated balances and foreign currency hedging activities.

(Benefit from) provision for income taxes—We are subject to income taxes in the U.S. and numerous foreign jurisdictions. Significant judgment is required in determining the provision for income taxes and income tax assets and liabilities, including evaluating uncertainties in the application of accounting principles and complex tax laws. In our Audited Combined Financial Statements, (benefit from) provision for income taxes and deferred income tax balances have been calculated on a stand-alone basis, although our operations have historically been included in the tax returns filed by Dover. As a stand-alone entity, we file tax returns on our own behalf and our deferred taxes and effective tax rate may differ from those in historical periods prior to the Separation. The Tax Reform Act, which was enacted on December 22, 2017, significantly changed U.S. tax law by, among other things, lowering corporate income tax rates, implementing a territorial tax system and imposing a repatriation tax on deemed repatriated earnings of foreign subsidiaries. Effective in 2018, the U.S. statutory rate decreased from 35% to 21%. In addition, our overall effective income tax rate can be lower or higher than the U.S. statutory rate due to U.S. state and local income taxes and the tax effect on foreign operations.

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Key Performance Indicators

Throughout this MD&A, we refer to measures used by management to evaluate performance, including a number of financial and operational measures. We believe that both of these operational measures provide us and our investors an indication of our performance and outlook. These measures include:

Bookings—Bookings represent the dollar value of customer orders for a particular period.

Book-to-bill ratio—The book-to-bill ratio is used as an indicator of demand versus current period revenue, and it compares the total dollar amount of orders received relative to revenues for the corresponding period. A ratio above 1.0 implies that more orders were received than filled, indicating strong customer demand, while a ratio below 1.0 implies weaker customer demand.

Results of Operations

Three Months Ended September 30, 2018 and 2017

Revenue

Revenue for the third quarter of 2018 increased $57.8 million, or 22.4%, year-over-year driven by broad-based volume growth in our Production & Automation Technologies’ artificial lift and digital offerings due to improving oil and gas markets, particularly U.S. rig count and well completion activity. In addition, revenue increased in our Drilling Technologies segment year-over-year due to increased volumes driven by increased worldwide rig counts and footage drilled, combined with continued customer adoption of our diamond bearings technology.

Gross Profit

Gross profit for the third quarter of 2018 increased $29.0 million, or 34.2%, year-over-year, reflecting benefits of increased sales volumes in both our Production & Automation Technologies and Drilling Technologies segments, combined with the realization of productivity initiatives.

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Selling, General and Administrative Expense

Selling, general and administrative expense in the third quarter of 2018 increased $14.2 million, or 25.9%, year-over-year, primarily due to increased headcount in support of our growth initiatives, higher bonus accruals, and $4.4 million in professional fees and other related charges associated with the Separation.

Interest Expense, Net

Interest expense, net in the third quarter of 2018 increased $10.5 million year-over-year due to issuances of our Term Loan Facility and the outstanding notes during the second quarter of 2018.

Provision for Income Taxes

The effective tax rates for the third quarter of 2018 and 2017 were 23.2% and 30.6%, respectively. The year-over-year decrease in the effective tax rate was primarily due to the Tax Reform Act, which was enacted on December 22, 2017, and which reduced the U.S. corporate income tax rate from a maximum of 35% to 21%, effective January 1, 2018.

Nine Months Ended September 30, 2018 and 2017

Revenue

Revenue for the first nine months of 2018 increased $161.2 million, or 21.6%, year-over-year driven by broad-based volume growth in our Production & Automation Technologies’ artificial lift and digital offerings due to improving oil and gas markets, particularly U.S. rig count and well completion activity. In addition, revenue increased in our Drilling Technologies segment year-over-year due to increased volumes driven by increased U.S. rig counts and market share gains.

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Gross Profit

Gross profit for the first nine months of 2018 increased $66.9 million, or 27.4%, year-over year, reflecting benefits of increased sales volumes in both our Production & Automation Technologies and Drilling Technologies segments, combined with realization of productivity initiatives.

Selling, General and Administrative Expense

Selling, general and administrative expense for the first nine months of 2018 increased $32.2 million, or 19.8%, year-over-year, primarily due to increased headcount in support of our growth initiatives, higher bonus accruals and $9.5 million in professional fees and other related charges associated with the Separation.

Interest Expense, Net

Interest expense, net in the first nine months of 2018 increased $16.6 million year-over-year due to issuances of our Term Loan Facility and the outstanding notes during the second quarter of 2018.

Provision for Income Taxes

The effective tax rates for the first nine months of 2018 and 2017 were 25.2% and 30.9%, respectively. The year-over-year decrease in the effective tax rate was primarily due to the Tax Reform Act, which was enacted on December 22, 2017, and which reduced the U.S. corporate income tax rate from a maximum of 35% to 21%, effective January 1, 2018. This benefit was partially offset by tax on capital gains related to certain reorganizations of our subsidiaries as a result of the Separation.

Years Ended December 31, 2017, 2016 and 2015

Revenue

For the year ended December 31, 2017, revenue increased $258.3 million, or 34.4%, to $1.0 billion compared with 2016, driven by significant growth in U.S. and Canada rig counts and increased well completion activity during the year. Customer pricing did not have a significant impact to revenue in 2017.

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For the year ended December 31, 2017, U.S. revenue increased 37.7% compared with 2016, primarily due to a 72.1% increase in U.S. rig count from 509 rigs in 2016 to 876 rigs in 2017. Non-U.S. revenue increased 24.8% for the year ended December 31, 2017 compared with 2016 largely due to the increase in Canada rig count of 58% from 130 in 2016 to 206 in 2017.

For the year ended December 31, 2016, revenue decreased $325.3 million, or 30.2%, to $751.3 million compared with 2015, driven by significant declines in market fundamentals, especially with regard to U.S. rig count and end-customer capital spending. These reductions broadly impacted our segments. Customer pricing unfavorably impacted revenue by approximately 1.9% in 2016.

For the year ended December 31, 2016, U.S. revenue declined 30.8% compared with 2015, primarily as a result of a U.S. rig count decline of 48.0%, from 978 rigs in 2015 to 509 rigs in 2016. Non-U.S. revenue declined 28.4% for the year ended December 31, 2016 compared with 2015 largely due to the decline in oil and gas prices leading to decreased exploration and production activities outside of the U.S.

Gross Profit

For the year ended December 31, 2017, our gross profit increased $123.1 million, or 63.0%, to $318.5 million compared with 2016, primarily due to a significant increase in organic sales volume due to an improving oil and gas market compared to the prior year. Gross profit margin increased 550 basis points primarily due to the increase in sales volume, increased leverage on operating costs, the benefits of prior year restructuring actions and lower restructuring cost.

For the year ended December 31, 2016, our gross profit decreased $139.3 million, or 41.6%, to $195.3 million compared with 2015, primarily due to the significant decline in organic sales volumes related to the decline in the oil and gas market, which also led to decreased leverage on operating costs. This decline was partially offset by supply chain cost containment initiatives, cost savings realized from restructuring programs, net of costs, and a decrease in depreciation and amortization costs of $6.9 million. Gross profit margin declined 510 basis points primarily due to significant decline in sales volume combined with pricing weakness.

Selling, General and Administrative Expense

For the year ended December 31, 2017, selling, general and administrative expense increased $14.1 million, or 6.8%, to $219.5 million compared with 2016, primarily reflecting an increase in employee incentive compensation and corporate allocations as a result of a significant increase in revenues and earnings and an increase in the number of employees, partially offset by the benefits of prior restructuring actions and lower restructuring costs. As a percentage of revenue, selling, general and administrative expense decreased 560 basis points in 2017 to 21.7%, reflecting increased leverage of operating costs on a higher revenue base, partially offset by the aforementioned increase in expenses.

For the year ended December 31, 2016, selling, general and administrative expense decreased $40.3 million, or 16.4%, to $205.4 million compared with 2015, reflecting the impact of cost savings realized from restructuring programs and reduced discretionary spending, as well as a decrease in restructuring charges of $6.4 million. As a percentage of revenue, selling, general and administrative expense increased 450 basis points in 2016 to 27.3%, as we were unable to reduce costs as rapidly as sales were declining due to overall market weakness.

Other Expense, Net

For the years ended December 31, 2017, 2016 and 2015, other expense, net of $9.7 million, $8.8 million and $11.7 million, respectively, included royalty expenses paid to Dover of $9.8 million, $7.4 million and $10.4 million, respectively, for the use of patents and intangible assets owned by Dover. Patents and intangibles owned by Dover related to Apergy transferred to Apergy upon separation. Following the Separation, no further

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royalty charges are expected to be incurred by Apergy from Dover. Other expense, net also included $0.3 million of net foreign exchange gains for 2017 and $0.7 million of net foreign exchange losses for both 2016 and 2015 resulting from the re-measurement and settlement of foreign currency denominated balances including gains and losses on hedging activities.

Provision for (Benefit from) Income Taxes

Our businesses operate globally, as such, we generate income and losses in many different jurisdictions. For the years ended December 31, 2017, 2016 and 2015, pre-tax earnings generated in foreign jurisdictions was $22.4 million, $7.1 million and $15.6 million, respectively. As a percentage of our total pre-tax earnings (loss), foreign pre-tax earnings was 25.1%, (37.7)% and 20.2%, respectively. With regard to 2016, the rate of (37.7)% reflects foreign pre-tax earnings of $7.1 million as a percentage of our total pre-tax loss of $18.8 million. Foreign earnings are generally subject to local country tax rates that are below the 35.0% U.S. statutory tax rate as of December 31, 2017. As a result, our historical effective non-U.S. tax rate has typically been significantly lower than the U.S. statutory tax rate. Effective January 1, 2018, the U.S. statutory rate was permanently decreased to 21.0%, due to the Tax Reform Act.

For the year ended December 31, 2017, our effective tax rate was (25.0)%, driven predominantly by a provisional net tax benefit of $49.3 million due to the Tax Reform Act. The net tax benefit was primarily related to a $53.2 million impact from the re-measurement of deferred tax liabilities arising from a lower U.S. corporate income tax rate. The Tax Reform Act also imposed a tax for a one-time deemed repatriation of post-1986 unremitted foreign earnings and profits through the year ended December 31, 2017. As a result, we also recorded a provisional tax expense related to the deemed repatriation of $3.9 million. The final impact may differ from these provisional amounts, and such differences may be material, due to, among other things, issuance of additional regulatory guidance, changes in interpretations and assumptions we made, and actions we may take as a result of the Tax Reform Act.

For the year ended December 31, 2016, our effective tax rate was 42.7% compared to 31.2% for the year ended December 31, 2015. The 2016 tax rate increased from 2015 primarily due to the impact of foreign operations and domestic manufacturing deductions.

The Company has not recorded a liability for uncertain tax positions at December 31, 2017 and 2016.

See Note 11—“Income Taxes” in the Audited Combined Financial Statements included elsewhere in this prospectus for additional details.

Net Income (Loss) Attributable to Apergy

For the year ended December 31, 2017, net income (loss) attributable to Apergy increased $123.3 million, or 975.2%, to net income of $110.6 million, compared with a net loss of $12.6 million for the year ended December 31, 2016. This increase was primarily driven by increased sales volume due to significant growth in U.S. and Canada rig counts, increased well completion activity during the year and the favorable impact in 2017 of the Tax Reform Act of $49.3 million.

For the year ended December 31, 2016, net (loss) income attributable to Apergy decreased $64.3 million, or 124.5%, to a $12.6 million net loss, compared with income of $51.7 million, for the year ended December 31, 2015. This decrease is primarily driven by significantly lower volume attributable to deteriorating oil and gas related market conditions, partially offset by savings from restructuring actions of approximately $60 million and decreases in restructuring charges of $6.1 million and depreciation and amortization of $7.9 million.

Restructuring Activities

The restructuring charges of $6.9 million incurred in 2017 related to restructuring programs designed to continue to optimize our operations within our Production & Automation Technologies segment through facility

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consolidations, exiting from certain non-strategic product lines and work force reductions. The Drilling Technologies segment did not incur any restructuring charges in 2017.

In 2016 and 2015, we incurred restructuring charges totaling $15.2 million and $21.2 million, respectively, relating to targeted facility consolidations at certain businesses, headcount reductions and other actions taken to optimize our cost structure. See Note 9—“Restructuring Activities” in the Audited Combined Financial Statements included elsewhere in this prospectus for additional details regarding our recent restructuring activities.

The cost savings realized as a result of restructuring programs and other cost management actions previously initiated were approximately $18 million, $60 million and $45 million during 2017, 2016 and 2015, respectively. The cost savings associated with these actions are reflected in cost of goods and services and selling, general and administrative expense in the combined statements of income.

Segment Results of Operations

Prior to the Separation, Apergy was part of the Dover Energy operating segment. As Apergy transitioned into a stand-alone company, its Chief Executive Officer, in his capacity as Chief Operating Decision Maker (“CODM”), evaluated how to view and measure the business performance. Based upon such evaluation, and effective during the fourth quarter of 2017, Apergy determined it is organized into two operating segments, which are also its reportable segments based on how the CODM analyzes performance, allocates capital and makes strategic and operational decisions. The CODM allocates resources to and evaluates the financial performance of each operating segment primarily based on revenues and segment operating profit. Segment results for the periods covered by the Audited Combined Financial Statements and the Interim Financial Statements are presented in accordance with this structure.

The summary that follows provides a discussion of the results of operations of both reportable segments: Production & Automation Technologies and Drilling Technologies. See Note 16—“Segment Information” in the Audited Combined Financial Statements for the years ended December 31, 2017, 2016 and 2015 and Note 17—“Segment Information” in the Interim Financial Statements for the three and nine month periods ended September 30, 2018 and 2017, each included elsewhere in this prospectus, for a reconciliation of segment revenue and segment operating profit to our results for the applicable periods.

Production & Automation Technologies

Three Months Ended September 30, 2018 and 2017

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Revenue

Production & Automation Technologies revenue increased $41.8 million, or 20.9%, year-over-year, driven by broad-based volume growth in our artificial lift offering, particularly from further penetration in the U.S. onshore electrical submersible pump market. Additionally, we realized higher revenue from our digital offerings due to increased customer adoption.

Operating Profit

Production & Automation Technologies operating profit increased $15.9 million year-over-year. The increase was primarily driven by growth in sales volume associated with improving oil and gas markets, particularly U.S. rig count and well completion activity. In addition, the increase in operating profit was due to productivity savings, partially offset by higher material costs related to aluminum and steel. Operating profit during the third quarter of 2018 benefitted from the absence of the royalty charge from Dover.

Bookings and Book-to-Bill

Bookings for the third quarter of 2018 increased $32.1 million, or 15.3%, year-over-year, reflecting ongoing market improvement. Our book-to-bill ratio was 1.00 in the third quarter of 2018, reflecting strong customer demand. The decline in our book-to-bill ratio year-over-year was due to a large customer order in the third quarter of 2017.

Nine Months Ended September 30, 2018 and 2017

Revenue

Production & Automation Technologies revenue for the first nine months of 2018 increased $118.2 million, or 20.4%, year-over-year, driven by broad-based volume growth in our artificial lift offering, particularly from further penetration in the U.S. onshore electrical submersible pump market. Additionally, we realized higher revenue from our digital offerings due to increased customer adoption.

Operating Profit

Production & Automation Technologies operating profit increased $31.7 million year-over-year. The increase was primarily driven by growth in sales volume associated with improving oil and gas markets, particularly U.S. rig count and well completion activity. In addition, the increase in operating profit was due to productivity savings, partially offset by higher material costs related to aluminum and steel. Operating profit during the first nine months of 2018 benefitted from lower royalty charges from Dover which ended on April 1, 2018; however, this benefit was partially offset by restructuring charges incurred during the first nine months of 2018.

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Bookings and Book-to-Bill

Bookings for the first nine months of 2018 increased $111.8 million, or 18.8%, year-over-year, reflecting ongoing market improvement. Our book-to-bill ratio was 1.02 in the first nine months of 2018, reflecting strong customer demand.

Years Ended December 31, 2017, 2016 and 2015

2017 Versus 2016

Production & Automation Technologies segment revenue increased for the year ended December 31, 2017, by $143.9 million, or 22.6%, compared to the prior year, driven by higher demand from our customers as a result of the increase of active drilling rigs and well completion activity in the U.S. and abroad. Customer pricing favorably impacted revenue by 0.4% for the year ended December 31, 2017.

Production & Automation Technologies segment operating profit for the year ended December 31, 2017 compared to prior year segment operating loss increased by $46.6 million, or 214.8%, primarily driven by an increase in sales volume due to improving oil and gas markets. The increase in operating profit included cost savings realized from restructuring programs of approximately $14.7 million as well as a reduction in restructuring charges of $5.8 million.

Bookings for the year ended December 31, 2017 increased $167.7 million, or 26.8%, compared to the prior year, reflecting market improvement. Segment book-to-bill was 1.01 in 2017, an increase of 3.1% compared to the prior year.

2016 Versus 2015

Production & Automation Technologies segment revenue decreased for the year ended December 31, 2016, by $274.4 million, or 30.1%, compared to the prior year, driven by lower demand from our customers as a result of the dramatic decrease in the price of oil and a decline of active drilling rigs and well completion activity in the U.S. and abroad due to global supply of oil and gas exceeding demand. Customer pricing unfavorably impacted revenue by approximately 1.9% in 2016.

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Production & Automation Technologies segment operating loss for the year ended December 31, 2016 compared to prior year segment operating profit decreased by $80.1 million, or 137.1%, primarily driven by a decline in sales volume due to deteriorating oil and gas markets. The decline was partially offset by the impact of cost savings realized from restructuring programs of approximately $47 million as well as a reduction in depreciation and amortization expense of $4.0 million and restructuring charges of $6.0 million.

Bookings for the year ended December 31, 2016 decreased $244.8 million, or 28.1%, compared to the prior year, reflecting ongoing market weakness. Segment book-to-bill was 0.98 in 2016, an increase of 3.2% compared to the prior year.

Drilling Technologies

Three Months Ended September 30, 2018 and 2017

Revenue

Drilling Technologies revenue increased $16.1 million, or 27.1%, year-over-year due to increased volumes driven by increased worldwide rig counts and continued customer adoption of our diamond bearings technology.

Operating Profit

Drilling Technologies operating profit increased $5.8 million year-over-year due to higher volumes driven by increased rig counts and overall operational productivity gains.

Bookings and Book-to-Bill

Bookings for the third quarter of 2018 increased $19.7 million, or 35.1%, year-over-year, reflecting improved market conditions. Our book-to-bill ratio was 1.01 in the third quarter of 2018, reflecting strong customer demand.

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Nine Months Ended September 30, 2018 and 2017

Revenue

Drilling Technologies revenue increased $43.1 million, or 25.8%, year-over-year due to increased volumes driven by increased worldwide rig counts and footage drilled, market share gains and continued customer adoption of our diamond bearings technology.

Operating Profit

Drilling Technologies operating profit increased $16.7 million year-over-year due to higher volumes driven by increased U.S. rig counts and overall operational productivity gains.

Bookings and Book-to-Bill

Bookings for the first nine months of 2018 increased $44.7 million, or 26.2%, year-over-year, reflecting improved market conditions. Our book-to-bill ratio was 1.03 in 2018, reflecting strong customer demand.

Years Ended December 31, 2017, 2016 and 2015

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2017 Versus 2016

Drilling Technologies segment revenue for the year ended December 31, 2017 increased $114.3 million, or 100.9%, compared to the prior year, driven by higher demand from our customers as a result of the increase in active drilling rigs in the U.S. and Canada. Customer pricing unfavorably impacted revenue by approximately 2.6% for the year ended December 31, 2017.

Drilling Technologies segment operating profit for the year ended December 31, 2017 increased $65.9 million, or 785.0%, compared to the prior year primarily driven by increased sales volume and from the benefit of approximately $2.9 million in restructuring savings, partially offset by unfavorable pricing.

Bookings for the year ended December 31, 2017 increased $114.4 million, or 96.6%, compared to the prior year, due to market improvement. Segment book-to-bill was 1.02 in 2017, a decrease of 2.9% compared to the prior year.

2016 Versus 2015

Drilling Technologies segment revenue for the year ended December 31, 2016 decreased $51.0 million, or 31.0%, compared to the prior year, driven by lower demand from our customers as a result of the dramatic decrease in the price of oil and a decline in active drilling rigs in the U.S. and abroad. Customer pricing did not have a significant impact to revenue for the year ended December 31, 2016.

Drilling Technologies segment operating profit for the year ended December 31, 2016 decreased $18.4 million, or 68.7%, compared to the prior year primarily driven by declining sales volume. The decline was partially offset by the impact of cost savings realized from restructuring actions of approximately $13 million as well as a reduction in depreciation and amortization expense of $3.9 million.

Bookings for the year ended December 31 2016, decreased $42.3 million, or 26.3%, compared to the prior year, due to ongoing market weakness. Segment book-to-bill was 1.05 in 2016, an increase of 7.1% compared to the prior year.

Capital Resources and Liquidity

Historically, Apergy has generated and expects to continue to generate positive cash flow from operations. In response to the unprecedented market conditions beginning in the second half of 2014 and continuing through 2016, we pursued a comprehensive contingency plan that aimed at managing short-term financial performance and preserving long-term competitive advantage. As part of this plan, we identified and preserved the core capabilities that will position us well for the recovery. We implemented aggressive restructuring actions aimed at facility and cost structure rationalization, including headcount reductions. Enterprise wide working capital reduction efforts were deployed specifically targeting inventory reductions and increases in supplier payment terms. Additionally, our global sourcing teams secured incremental material savings to lower product costs, while our operations teams drove incremental productivity gains within our factories. In parallel, we worked diligently to preserve key technology investments and customer relationships, as well as retention of key talent during this period. As a result of our efforts, we continued to generate positive cash from operating activities in 2015 and 2016. As the market began to stabilize in 2017, we saw a significant increase in U.S. rig count and customer spending. In response, we have utilized more cash to increase production and invest in working capital needs while still maintaining positive cash from operating activities.

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Subsequent to the Separation, we no longer participate in cash management and funding arrangements with Dover. Historically, we have utilized these arrangements to fund significant expenditures, such as manufacturing capacity expansion and acquisitions. Our ability to fund our operations and capital needs will depend on our ongoing ability to generate cash from operations and access capital markets. We believe that our future cash from operations and access to capital markets will provide adequate resources to fund working capital needs, make capital expenditures and strategic investments and pay dividends (if any).

Our ability to make payments on and to refinance our indebtedness, including the indebtedness incurred in conjunction with the Separation, as well as any indebtedness that we may incur in the future, will depend on our future ability to generate cash from operations, as well as financings or asset sales. Our cash and cash equivalents totaled $23.7 million and $26.0 million at December 31, 2017 and 2016, respectively, which was held by our non-pooling, non-U.S. operations. As a result of the Tax Reform Act, during 2018, we plan to make cash distributions to the U.S. from non-U.S. subsidiaries of up to an estimated $6.0 million, which is not anticipated to result in any withholding tax expense.

Prior to the Separation, our U.S. cash was pooled to Dover through intercompany advances and is not reflected on our combined balance sheets. AMES, where Apergy is the majority owner at 60% and has the controlling financial interest, held $9.5 million and $11.3 million of Apergy’s total cash and cash equivalents at December 31, 2017 and 2016, respectively. The funds are not formally segregated or legally restricted. Distributions are determined based upon simple majority vote and subject to customary statutory requirements. Apergy is entitled to 60% of any approved distributions.

Cash Flow Summary

The following tables are derived from our combined or consolidated statements of cash flows, as applicable:

Operating Activities

Nine Months Ended September 30, 2018 and 2017

We generated cash from operating activities for the nine months ended September 30, 2018 and 2017, of $92.8 million and $41.2 million, respectively. The increase in cash provided by operating activities was primarily driven by higher cash income generated from operations. Both our Production & Automation Technologies and Drilling Technologies segments reported increased earnings year-over-year. The increase was partially offset by cash required for working capital needs.

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Years Ended December 31, 2017, 2016 and 2015

Cash provided by operating activities for the year ended December 31, 2017 decreased $52.8 million compared to 2016. This decrease was primarily a result of higher investments in working capital driven by sales volume increases. For the year ended December 31, 2017, cash used to invest in working capital was $71.3 million, whereas for the year ended December 31, 2016, cash provided by working capital was $46.2 million, resulting in an overall decrease in cash of $117.5 million. The decrease in cash was partially offset by higher net income of $73.8 million, excluding non-cash activity from depreciation and amortization and the impact of the Tax Reform Act.

Cash provided by operating activities for the year ended December 31, 2016 decreased $86.0 million compared to 2015. This decrease was driven primarily by lower income of $80.3 million, excluding depreciation and amortization, due to lower sales volumes from the deteriorating oil and gas related market conditions. The decrease was also driven by lower cash inflows from working capital of $5.6 million primarily due to the aforementioned lower sales levels.

Investing Activities

Nine Months Ended September 30, 2018 and 2017

For the nine months ended September 30, 2018 and 2017, we used cash from investing activities of $44.8 million and $26.8 million, respectively. The increase in cash used by investing activities was primarily due to investments to support increased sales and investments in assets available to customers on a rental basis.

Years Ended December 31, 2017, 2016 and 2015

Cash used in investing activities resulted primarily from cash outflows for capital expenditures, acquisition of a business and the additions of intangible assets, partially offset by proceeds from the sale of property, plant and equipment. The majority of the activity in investing activities comprised the following:

Capital spending: Capital expenditures, primarily to support productivity, new product launches and investments in assets available to customers on a rental basis, were $41.2 million in 2017, $26.9 million in 2016 and $32.0 million in 2015 or 4.1%, 3.6% and 3.0%, respectively, as a percentage of revenue. Our capital expenditures increased $1.0 million for the year ended December 31, 2017 as compared to 2016, primarily within the Production & Automation Technologies segment, to invest in facility expansion to accommodate reorganization and consolidation elsewhere in the business.

Acquisition: In 2017, we deployed $8.8 million to acquire PCP Oil Tools, within the Production & Automation Technologies segment. See Note 4—“Acquisitions” in the Audited Combined Financial Statements included elsewhere in this prospectus for additional details.

Additions to intangible assets: During the years ended December 31, 2016 and 2015, we acquired patents for $3.7 million and $10.0 million, respectively, from Dover. We capitalized the patent costs in the combined balance sheets and are amortizing them to the combined statements of income based upon their estimated useful lives. There were no such additions in 2017.

Financing Activities

Nine Months Ended September 30, 2018 and 2017

Cash used in financing activities of $53.6 million for the nine months ended September 30, 2018, was the result of (i) net transfers to Dover of $728.9 million, primarily comprised of our $700 million payment to Dover related to the Separation, (ii) $20.0 million of debt repayment on our Term Loan Facility and (iii) $2.7 million of

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distributions to our noncontrolling interest holder in AMES. These payments were partially offset by issuances of long-term debt, net of debt issuance costs, of $698.0 million. Cash used in financing activities for the nine months ended September 30, 2017, primarily resulted from net transfers to Dover.

Years Ended December 31, 2017, 2016 and 2015

Cash used in financing activities prior to the Separation results primarily from using cash for net transfers to parent and the distribution to non-controlling interest. Transfers of cash to and from Dover are reflected as a component of Parent Company investment in Apergy in the combined balance sheets for periods prior to the Separation. During the years ended December 31, 2017 and 2016, we also made distributions to our noncontrolling interest holder in AMES of approximately $1.2 million and $1.7 million, respectively, with no similar activity during the year ended December 31, 2015.

Debt

Senior Notes

On May 3, 2018, and in connection with the Separation, we completed the private placement of $300 million in aggregate principal amount of the outstanding notes. Interest on the outstanding notes is payable semi-annually in arrears on May 1 and November 1 of each year. Net proceeds of $293.8 million from the offering were utilized to partially fund the cash payment to Dover and to pay fees and expenses incurred in connection with the Separation.

Senior Secured Credit Facilities

On May 9, 2018, Apergy entered into a credit agreement governing the terms of its the Senior Secured Credit Facilities, consisting of (i) a seven-year senior secured term loan B facility (which is referred to in this prospectus as the Term Loan Facility) and (ii) a five-year senior secured revolving credit facility (which is referred to in this prospectus as the Revolving Credit Facility), with JPMorgan Chase Bank, N.A. as administrative agent. The net proceeds of the Senior Secured Credit Facilities were used (i) to pay fees and expenses in connection with the Separation, (ii) partially fund the cash payment to Dover and (iii) provide for working capital and other general corporate purposes.

Term Loan Facility. The Term Loan Facility had an initial commitment of $415.0 million. The full amount of the Term Loan Facility was funded on May 9, 2018. Amounts borrowed under the Term Loan Facility that are repaid or prepaid may not be re-borrowed. The Term Loan Facility matures in May 2025. Net proceeds of $408.7 million from the Term Loan Facility were utilized to partially fund the cash payment to Dover at the Separation and to pay fees and expenses incurred in connection with the Separation.

Revolving Credit Facility. The Revolving Credit Facility consists of a five-year senior secured facility with aggregate commitments in an amount equal to $250.0 million, of which up to $50.0 million is available for the issuance of letters of credit. Amounts repaid under the Revolving Credit Facility may be re-borrowed. The Revolving Credit Facility matures in May 2023.

A summary of our Revolving Credit Facility at September 30, 2018 was as follows:

As of September 30, 2018, we were in compliance with all restrictive covenants under our Senior Secured Credit Facilities. See Note 8—“Debt” to the Interim Financial Statements included elsewhere in this prospectus for additional information.

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Outlook

As a result of the Separation, we no longer participate in cash management and funding arrangements with Dover. Prior to the Separation, we utilized these arrangements to fund both daily operating activities and significant business expenditures, such as manufacturing capacity expansion and acquisitions.

We expect to generate our liquidity and capital resources through operations and, when needed, through our Revolving Credit Facility. We have $244.5 million of capacity available under our Revolving Credit Facility that we expect to utilize if working capital needs temporarily increase. The volatility in credit, equity and commodity markets creates some uncertainty for our businesses. However, management believes, based on our current financial condition and current expectations of future market conditions, that we will meet our short- and long-term needs with a combination of cash on hand, cash generated from operations, our use of our revolving credit facility and access to capital markets.

Over the next year, we expect to fund our organic capital expenditure needs and reduce our leverage through earnings growth and debt reduction. We continue to focus on improving our customer collection efforts and overall working capital turnover to improve our cash flow position. In 2018, we project spending approximately 3% of revenue for infrastructure related capital expenditures and an additional $25 million to $30 million for capital investments directed at expanding our portfolio of electrical submersible pump leased assets. During the fourth quarter of 2018, we expect to pay $7.7 million to Dover related to tax liabilities incurred as a result of the Separation.

Off-Balance Sheet Arrangements and Contractual Obligations

As of September 30, 2018, December 31, 2017 and December 31, 2016, we had approximately $5.5 million, $8.1 million and $16.0 million, respectively, outstanding in letters of credit with financial institutions, which expire at various dates between 2018 and 2020. These letters of credit are primarily maintained as security for insurance, warranty and other performance obligations. In general, we would only be liable for the amount of these guarantees in the event of default in the performance of our obligations, the probability of which we believe is remote.

A summary of our combined contractual obligations and commitments as of December 31, 2017 and the years when these obligations are expected to be due is as follows: